# After upgrade to 4.0 webpages very slow response

**URL:** <https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195>\
**Category:** Mystery Errors\
**Created:** [February 18, 2022, 7:34am UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195 "2022-02-18T07:34:46Z")\
**Posts on this page:** 12\
**Page:** 1

<div class="post-metadata">

**Author:** ![TRobdeVries](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/trobdevries/32/7496_2.png) [@TRobdeVries](https://forum.djangoproject.com/u/TRobdeVries)\
**Post date:** [February 18, 2022, 7:34am UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195/1 "2022-02-18T07:34:46Z")

</div>

Hi all,

this is my very first post although I have been using Django 3.x for almost 9 months. As i am in the start of my project still, i thought now is a good time to upgrade to Django 4.0, so i did.  
But, now pages load very slow fetching from my MySQL database, used to be very fast, instantaneously as not very big tables yet.  
Thus, I loaded the latest version debug\_bar to see where the time is spent. It shoiws that MySQL is still lightning fast but the time seems to go in deprecation.py to look for Async calls, but i am stil using only the WSGI and I am using the development server, see below:

PS C:\fcls\fcl\fcl1\> python manage.py runserver 8080  
Watching for file changes with StatReloader  
Performing system checks…

System check identified no issues (0 silenced).  
February 18, 2022 - 07:21:20  
Django version 4.0.1, using settings ‘fcl1.settings’  
Starting development server at [http://127.0.0.1:8080/](http://127.0.0.1:8080/)  
Quit the server with CTRL-BREAK.  
[18/Feb/2022 07:21:42] “GET /basis/ HTTP/1.1” 200 69722  
[18/Feb/2022 07:21:43] “GET /static/fucanglong-style.css HTTP/1.1” 304 0  
[18/Feb/2022 07:21:43] “GET /static/debug\_toolbar/css/toolbar.css HTTP/1.1” 304 0  
[18/Feb/2022 07:21:43] “GET /static/debug\_toolbar/js/toolbar.js HTTP/1.1” 304 0  
[18/Feb/2022 07:21:43] “GET /static/debug\_toolbar/css/print.css HTTP/1.1” 304 0  
[18/Feb/2022 07:21:43] “GET /static/debug\_toolbar/js/utils.js HTTP/1.1” 304 0  
[18/Feb/2022 07:22:04] “GET /favicon.ico HTTP/1.1” 200 10529  
[18/Feb/2022 07:30:00] “GET / **debug** /render\_panel/?store\_id=413f26f8f27445809712b92471bb435a&panel\_id=ProfilingPanel HTTP/1.1” 200 219225

If i look in side panel profiling (2 list below - due to size limitation) i see a ton of deprecation checks eating time, is this the problem or am i missing something? Or why was Django 3.9 fast and 4.0 so slow?

Any help appreciated as my application is still very small but response times of 20 to 30 seconds or more on localhost where the exact same application did under 1 sec to 2 seconds is not very nice.

**Fetching 4 records (select \* from Assets 8 columns, 4 rows, 835 Bytes only)**

| C:\fcls\Python310\lib\site-packages\debug\_toolbar\panels/ **init**.py in process\_request(184) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| --- | --- | --- | --- | --- | --- |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.118 | 0.118 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.118 | 0.118 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.111 | 0.111 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.118 | 0.118 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.118 | 0.118 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.116 | 0.116 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.116 | 0.039 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.118 | 0.118 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.118 | 0.118 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.111 | 0.111 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_table(99) | 0.111 | 0.111 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/config.py in configure(33) | 0.110 | 0.110 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.118 | 0.118 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.118 | 0.118 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.116 | 0.116 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.116 | 0.039 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\test/utils.py in instrumented\_test\_render(95) | 0.116 | 0.029 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\dispatch/dispatcher.py in send(149) | 0.060 | 0.015 | 0.000 | 0.000 | 4 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(976) | 0.058 | 0.015 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.118 | 0.118 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.118 | 0.118 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.230 | 0.038 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.112 | 0.112 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.111 | 0.111 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.118 | 0.118 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.118 | 0.118 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.116 | 0.116 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.116 | 0.039 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.230 | 0.230 | 0.000 | 0.000 | 1 |
| … more deleted | | | | | |

**From same database but now (select \* from Basis 24 columns, 249 rows, 48 Kilo Bytes only)**

| C:\fcls\Python310\lib\site-packages\debug\_toolbar\panels/ **init**.py in process\_request(184) | 1.236 | 1.236 | 0.000 | 0.000 | 1 |
| --- | --- | --- | --- | --- | --- |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.236 | 1.236 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.234 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.234 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.234 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.234 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.674 | 0.674 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.541 | 0.541 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.541 | 0.180 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.234 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.674 | 0.674 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_table(99) | 0.674 | 0.674 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/config.py in configure(33) | 0.670 | 0.670 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.541 | 0.541 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.541 | 0.180 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\test/utils.py in instrumented\_test\_render(95) | 0.537 | 0.134 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\dispatch/dispatcher.py in send(149) | 0.255 | 0.064 | 0.000 | 0.000 | 4 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(976) | 0.284 | 0.071 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.234 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.234 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.674 | 0.674 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.541 | 0.541 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.541 | 0.180 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.234 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.674 | 0.674 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_table(99) | 0.674 | 0.674 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/config.py in configure(33) | 0.670 | 0.670 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/tables.py in paginate(563) | 0.670 | 0.670 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core/paginator.py in page(74) | 0.670 | 0.670 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.541 | 0.541 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.541 | 0.180 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\test/utils.py in instrumented\_test\_render(95) | 0.537 | 0.134 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\dispatch/dispatcher.py in send(149) | 0.255 | 0.064 | 0.000 | 0.000 | 4 |
| - C:\fcls\Python310\lib\site-packages\django\dispatch/dispatcher.py in (170) | 0.255 | 0.064 | 0.000 | 0.000 | 4 |
| C:\fcls\Python310\lib\site-packages\debug\_toolbar\panels\templates/panel.py in \_store\_template\_info(74) | 0.255 | 0.064 | 0.000 | 0.000 | 4 |
| - C:\fcls\Python310\lib\site-packages\django\template/base.py in render(976) | 0.284 | 0.071 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/base.py in (977) | 0.284 | 0.000 | 0.001 | 0.001 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render\_annotated(930) | 0.284 | 0.000 | 0.001 | 0.000 | 10 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.234 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.234 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.234 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.674 | 0.674 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.541 | 0.541 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.541 | 0.180 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.234 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.675 | 0.675 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.552 | 0.552 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 1.233 | 1.233 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 1.236 | 0.206 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 1.227 | 1.227 | 0.000 | 0.000 | 1 |

… more deleted

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<div class="post-metadata">

**Author:** ![adamchainz](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/adamchainz/32/26_2.png) [@adamchainz](https://forum.djangoproject.com/u/adamchainz)\
**Post date:** [February 18, 2022, 8:41am UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195/2 "2022-02-18T08:41:19Z")

</div>

> [@TRobdeVries](#):
>
> If i look in side panel profiling (2 list below - due to size limitation) i see a ton of deprecation checks eating time, is this the problem or am i missing something? Or why was Django 3.9 fast and 4.0 so slow?

Okay, so the middleware deprecation check you’re seeing repeated in the stack is indeed known to be wasteful. And the good news is, I optimized it in [this PR](https://github.com/django/django/pull/15216), which will be released in Django 4.1. BUT it is almost certainly not the cause of any slowdown you’re experiencing. The waste is rather minimal - about 1 microsecond per call. It also did not change from Django 3.1 to 4.0.

You’re looking at your profile sorted by cumulative time. This will show the top level function calls as taking the longest, since they accumulate the runtime of the functions below. So all this really tells you is _something_ is slow during requests - not what. I think the right two columns that you’ve pasted are the per-call time and total itme - these are the ones to sort by to meaningfully find slow functions. As you can see for every row you’ve pasted, they are 0, i.e. less than a millisecond was spent actually in each of those functions, as opposed to a callee.

Try again with the profiling. I’m interested to find any performance regressions.

---

<div class="post-metadata">

**Author:** ![TRobdeVries](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/trobdevries/32/7496_2.png) [@TRobdeVries](https://forum.djangoproject.com/u/TRobdeVries)\
**Post date:** [February 18, 2022, 9:49am UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195/3 "2022-02-18T09:49:29Z")

</div>

yes, that is exactly the problem with Django 4.0.1, they appeared straight after the upgarde from Django 3.9. Nothing else changed but this upgrade.

---

<div class="post-metadata">

**Author:** ![TRobdeVries](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/trobdevries/32/7496_2.png) [@TRobdeVries](https://forum.djangoproject.com/u/TRobdeVries)\
**Post date:** [February 18, 2022, 9:54am UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195/4 "2022-02-18T09:54:05Z")

</div>

A full trace as requested, i only refreshed the page… I have not sorted anything, this is the standard way debug side panel opens… If i can or should do something different please let me know?

| C:\fcls\Python310\lib\site-packages\debug\_toolbar\panels/ **init**.py in process\_request(184) | 0.410 | 0.410 | 0.000 | 0.000 | 1 |
| --- | --- | --- | --- | --- | --- |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.410 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.297 | 0.297 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.297 | 0.099 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_table(99) | 0.100 | 0.100 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/config.py in configure(33) | 0.096 | 0.096 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.297 | 0.297 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.297 | 0.099 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\test/utils.py in instrumented\_test\_render(95) | 0.296 | 0.074 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\dispatch/dispatcher.py in send(149) | 0.063 | 0.016 | 0.000 | 0.000 | 4 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(976) | 0.238 | 0.059 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.297 | 0.297 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.297 | 0.099 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_table(99) | 0.100 | 0.100 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/config.py in configure(33) | 0.096 | 0.096 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/tables.py in paginate(563) | 0.096 | 0.096 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core/paginator.py in page(74) | 0.096 | 0.096 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.297 | 0.297 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.297 | 0.099 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\test/utils.py in instrumented\_test\_render(95) | 0.296 | 0.074 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\dispatch/dispatcher.py in send(149) | 0.063 | 0.016 | 0.000 | 0.000 | 4 |
| - C:\fcls\Python310\lib\site-packages\django\dispatch/dispatcher.py in (170) | 0.063 | 0.016 | 0.000 | 0.000 | 4 |
| C:\fcls\Python310\lib\site-packages\debug\_toolbar\panels\templates/panel.py in \_store\_template\_info(74) | 0.063 | 0.016 | 0.000 | 0.000 | 4 |
| - C:\fcls\Python310\lib\site-packages\django\template/base.py in render(976) | 0.238 | 0.059 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/base.py in (977) | 0.238 | 0.000 | 0.001 | 0.001 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render\_annotated(930) | 0.238 | 0.000 | 0.001 | 0.000 | 10 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.297 | 0.297 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.297 | 0.099 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_table(99) | 0.100 | 0.100 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/config.py in configure(33) | 0.096 | 0.096 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.297 | 0.297 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.297 | 0.099 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\test/utils.py in instrumented\_test\_render(95) | 0.296 | 0.074 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\dispatch/dispatcher.py in send(149) | 0.063 | 0.016 | 0.000 | 0.000 | 4 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(976) | 0.238 | 0.059 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/list.py in get(141) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_tables2/views.py in get\_context\_data(140) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template\backends/django.py in render(58) | 0.297 | 0.297 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/base.py in render(170) | 0.297 | 0.099 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in view(61) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\views\generic/base.py in dispatch(93) | 0.101 | 0.101 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\template/response.py in render(96) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\template/response.py in rendered\_content(72) | 0.308 | 0.308 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| - C:\fcls\Python310\lib\site-packages\django\core\handlers/exception.py in inner(44) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\utils/deprecation.py in **call** (119) | 0.410 | 0.068 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\core\handlers/base.py in \_get\_response(160) | 0.409 | 0.409 | 0.000 | 0.000 | 1 |
| C:\fcls\Python310\lib\site-packages\django\_otp/middleware.py in **call** (27) | | | | | |

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<div class="post-metadata">

**Author:** ![TRobdeVries](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/trobdevries/32/7496_2.png) [@TRobdeVries](https://forum.djangoproject.com/u/TRobdeVries)\
**Post date:** [February 18, 2022, 9:57am UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195/5 "2022-02-18T09:57:56Z")

</div>

The side panel says total time 578.79 ms but in real time i am waiting 18 seconds or so, slightly better than first fetch, some caching perhaps, but the timing and real-time do not seem to fit imho.  
Hope this helps?

---

<div class="post-metadata">

**Author:** ![TRobdeVries](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/trobdevries/32/7496_2.png) [@TRobdeVries](https://forum.djangoproject.com/u/TRobdeVries)\
**Post date:** [February 18, 2022, 10:03am UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195/6 "2022-02-18T10:03:08Z")

</div>

With a stopwatch this time, so start refresh page, start stopwatch … wait see result and hit stopwatch straight after - 23.12 seconds for Basis table - the slightly bigger one. If you want i can do it for the very small one, time it and send full trace… just let me know… don’t want to splash even more…Thanks

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<div class="post-metadata">

**Author:** ![CodenameTim](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/codenametim/32/31507_2.png) [@CodenameTim](https://forum.djangoproject.com/u/CodenameTim)\
**Post date:** [February 18, 2022, 11:02am UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195/7 "2022-02-18T11:02:12Z")

</div>

Did this get cut off? You may need to share it via [https://dpaste.org](https://dpaste.org)

---

<div class="post-metadata">

**Author:** ![TRobdeVries](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/trobdevries/32/7496_2.png) [@TRobdeVries](https://forum.djangoproject.com/u/TRobdeVries)\
**Post date:** [February 18, 2022, 12:34pm UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195/8 "2022-02-18T12:34:57Z")

</div>

Hi Tim,

The first post were indeed shortened because of message size restrictions. I did post a 100% full length as answer to someone else.  
It literally does only display a menu header and fetches one table with django\_tables2. Nothing else.  
In Django 3.9 this was like 1 to 2 seconds.  
In Django 4.o this is now 23 seconds  
Nothing else changed, or at least not by me.  
Still same simple application.  
This is for Basis table.  
The Asset table is only 4 rows but exactly the same as it takes 10x longer.  
I can see and tested MYSql , it’s as fast as before, 0.0009 seconds to fetch 4 rows…

Bottom line, everything works but wait times for database rendering very long.

Just to be 100% accurate, my breadcrumb and menu header pops up just as fast as before, then waiting 23 seconds and table is there.  
If I get the next 25 rows waiting again, but everything else seems to work fast and well on that page…

I have been a programmer for decades but this I have no clue to why other then this Asynchronous check…

Many thanks for your time,  
Rob de Vries

Verzonden vanaf mijn Galaxy

-------- Oorspronkelijk bericht --------

---

<div class="post-metadata">

**Author:** ![CodenameTim](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/codenametim/32/31507_2.png) [@CodenameTim](https://forum.djangoproject.com/u/CodenameTim)\
**Post date:** [February 18, 2022, 1:29pm UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195/9 "2022-02-18T13:29:46Z")

</div>

If you look at the last table you shared, the last row only has the first column populated. Either that’s a copy/paste error or it was cut short. If it was cut short, I’m suggesting the [dpaste.org](http://dpaste.org) route.

---

<div class="post-metadata">

**Author:** ![KenWhitesell](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/kenwhitesell/32/280_2.png) [@KenWhitesell](https://forum.djangoproject.com/u/KenWhitesell)\
**Post date:** [February 18, 2022, 2:10pm UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195/10 "2022-02-18T14:10:27Z")

</div>

> [@TRobdeVries](#):
>
> With a stopwatch this time, so start refresh page, start stopwatch … wait see result and hit stopwatch straight after - 23.12 seconds for Basis table - the slightly bigger one. If you want i can do it for the very small one, time it and send full trace… just let me know… don’t want to splash even more…Thanks

Rather than using a stopwatch on the screen, look at the timing data in your browser’s developer tools on the network tab. Look to see which request(s) are consuming the most time from the browser’s perspective. It’ll give you more discrete and detailed information about what’s going on.

[Edit: Also be aware that Django Debug Toolbar itself can add significant time to the response. Your timing measurements should be made with DDT disabled.]

---

<div class="post-metadata">

**Author:** ![TRobdeVries](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/trobdevries/32/7496_2.png) [@TRobdeVries](https://forum.djangoproject.com/u/TRobdeVries)\
**Post date:** [February 19, 2022, 6:08am UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195/11 "2022-02-19T06:08:37Z")

</div>

Hi Tim,

the only piece i missed copying was this: 0.328 0.328 0.000 0.000 1  
the last timings on that row/ Side Panel has no more data than that, maxed out scroll down…  
Sorry about that small missing piece.  
Rob

---

<div class="post-metadata">

**Author:** ![TRobdeVries](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.djangoproject.com/trobdevries/32/7496_2.png) [@TRobdeVries](https://forum.djangoproject.com/u/TRobdeVries)\
**Post date:** [February 19, 2022, 6:31am UTC](https://forum.djangoproject.com/t/after-upgrade-to-4-0-webpages-very-slow-response/12195/12 "2022-02-19T06:31:25Z")

</div>

Dear all,  
It is working again! 🤩 Not sure what it was but two things i did made it work very fast again even with Debug Toolbar on:  
1: Windows 11 had an update on my virtual machine last night →

> 2022-02 Cumulative Update for Windows 11 for x64-based Systems (KB5010414)

2: Chrome had an update that i applied - \>

> Chrome is up to date  
> Version 98.0.4758.102 (Official Build) (64-bit)

So, either windows or chrome had an issue in my case - VERY GLAD it is most likely not Django 4.0!!  
Thank you very much for your help, very nice to see such an active community actually trying to help and gave me some good tips along the way! Network tracing is very handy and will certainly use that more often!  
Many thanks to all who helped! 😀  
Best regards,  
Rob  
PS yes i did do a fresh restart before going online with this but that did not improved the slowness i reported - just to let you know, lol that is always the first thing to do 😉