#34442: runserver is slow to accept http connexions when running on 0.0.0.0
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Reporter: Arthur | Owner: nobody
Type: Bug | Status: new
Component: Uncategorized | Version: 4.1
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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When running `python manage.py runserver` on macOS, a decently sized
project takes about 1 second to startup and respond to requests (based on
the first access log I can see).
However, when running `python manage.py runserver 0.0.0.0:8000`, the
server will appear to have started, but will only start responding to
requests 7/8 seconds later.
I've been able to consistently reproduce the bug on a freshly installed
project aswell (`django-admin startproject timings_test`) :
- On 127.0.0.1:8000, the app will start in (08:42:11 - 08:42:11) less than
a second
- On 0.0.0.0:8000, the app will start in (08:42:32 - 08:42:26)
approximately 6 seconds
{{{
bash-3.2$ cd $(mktemp -d)
bash-3.2$ django-admin startproject timings_test
bash-3.2$ cd timings_test/
bash-3.2$ # I'll now refresh my web browser, pay close attention to the
timings
bash-3.2$ python3 manage.py runserver
Watching for file changes with StatReloader
Performing system checks...
System check identified no issues (0 silenced).
You have 18 unapplied migration(s). Your project may not work properly
until you apply the migrations for app(s): admin, auth, contenttypes,
sessions.
Run 'python manage.py migrate' to apply them.
March 28, 2023 - 08:42:11
Django version 4.1.7, using settings 'timings_test.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
Not Found: /__reload__/events/
[28/Mar/2023 08:42:11] "GET /__reload__/events/ HTTP/1.1" 404 2137
[28/Mar/2023 08:42:12] "GET / HTTP/1.1" 200 10681
[28/Mar/2023 08:42:12] "GET /static/admin/css/fonts.css HTTP/1.1" 304 0
[28/Mar/2023 08:42:12] "GET /static/admin/fonts/Roboto-Bold-webfont.woff
HTTP/1.1" 304 0
[28/Mar/2023 08:42:12] "GET /static/admin/fonts/Roboto-Regular-
webfont.woff HTTP/1.1" 304 0
[28/Mar/2023 08:42:12] "GET /static/admin/fonts/Roboto-Light-webfont.woff
HTTP/1.1" 304 0
Not Found: /favicon.ico
[28/Mar/2023 08:42:12] "GET /favicon.ico HTTP/1.1" 404 2116
[28/Mar/2023 08:42:12,122] - Broken pipe from ('127.0.0.1', 54544)
[28/Mar/2023 08:42:12] "GET / HTTP/1.1" 200 10681
Not Found: /__reload__/events/
[28/Mar/2023 08:42:14] "GET /__reload__/events/ HTTP/1.1" 404 2137
Not Found: /__reload__/events/
[28/Mar/2023 08:42:17] "GET /__reload__/events/ HTTP/1.1" 404 2137
^Cbash-3.2$ python3 manage.py runserver 0.0.0.0:8000
Watching for file changes with StatReloader
Performing system checks...
System check identified no issues (0 silenced).
You have 18 unapplied migration(s). Your project may not work properly
until you apply the migrations for app(s): admin, auth, contenttypes,
sessions.
Run 'python manage.py migrate' to apply them.
March 28, 2023 - 08:42:26
Django version 4.1.7, using settings 'timings_test.settings'
Starting development server at http://0.0.0.0:8000/
Quit the server with CONTROL-C.
[28/Mar/2023 08:42:32] "GET / HTTP/1.1" 200 10681
Not Found: /__reload__/events/
[28/Mar/2023 08:42:32] "GET /__reload__/events/ HTTP/1.1" 404 2137
Not Found: /__reload__/events/
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/34442>
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