django debug toolbar: how do i profile a file download?

So let's say you have a form where this download can be requested. Typically your view would return something like:

#(Do something here to collect data)
response = HttpResponse(export_data, content_type = content_type)
response['Content-Disposition'] = 'attachment; filename=somefile.txt'
return response

You are right, this is one of the cases where the Debug Toolbar cannot help you. I would recommend using log files to time your request times. For instance, if you are using Nginx then you can use its syntax for adding extra information to log files. For instance the following line adds the response time for each request:

log_format timed_combined '$remote_addr - $remote_user [$time_local]  '
'"$request" $status $body_bytes_sent '
'"$http_referer" "$http_user_agent" '
'$request_time $upstream_response_time $gzip_ratio';

Suggestion : 2

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log_format timed_combined '$remote_addr - $remote_user [$time_local]  '
'"$request" $status $body_bytes_sent '
'"$http_referer" "$http_user_agent" '
'$request_time $upstream_response_time $gzip_ratio';

So let's say you have a form where this download can be requested. Typically your view would return something like:

#(Do something here to collect data)
response = HttpResponse(export_data, content_type = content_type)
response['Content-Disposition'] = 'attachment; filename=somefile.txt'
return response

Suggestion : 3

Displays a flame graph for visualizing the performance profile of the request, using Brendan Gregg’s flamegraph.pl script to perform the heavy lifting.,Allows you to quickly open template files and views directly in your IDE! In addition to the path above, you need to add mrbenn_panel in INSTALLED_APPS,LDAP Operations performed during the request, including timing, request and response messages, the entries received, write changes list, stack-tracing and error debugging. This panel also shows connection usage metrics when it is collected. Check out the docs.,This should only include initialization or instrumentation that needs to be done unconditionally for the panel regardless of whether it is enabled for a particular request. It should be idempotent.

import {
   $$
} from "./utils.js";

function addCustomMetrics() {
   // Logic to process/add custom metrics here.

   // Be sure to cover the case of this function being called twice
   // due to file being loaded asynchronously.
}
const djDebug = document.getElementById("djDebug");
$$.onPanelRender(djDebug, "CustomPanel", addCustomMetrics);
// Since a panel's scripts are loaded asynchronously, it's possible that
// the above statement would occur after the djdt.panel.render event has
// been raised. To account for that, the rendering function should be
// called here as well.
addCustomMetrics();

Suggestion : 4

First, you’ll need to install and configure django-debug-toolbar as per its installation instructions.,Third, add it to your installed apps - order doesn’t matter but after debug_toolbar will keep it neatly grouped:,Fourth, configure django-debug-toolbar’s DEBUG_TOOLBAR_PANELS setting as per its documentation to include the panel. You’ll need to copy the default and add the panel at the end:, pip install django-debug-toolbar-template-profiler Copy PIP instructions

Second, install this package:

pip install django - debug - toolbar - template - profiler

Third, add it to your installed apps - order doesn’t matter but after debug_toolbar will keep it neatly grouped:

INSTALLED_APPS = [
   #...
   "debug_toolbar",
   "template_profiler_panel",
   #...
]

Fourth, configure django-debug-toolbar’s DEBUG_TOOLBAR_PANELS setting as per its documentation to include the panel. You’ll need to copy the default and add the panel at the end:

DEBUG_TOOLBAR_PANELS = [
   #...
   "template_profiler_panel.panels.template.TemplateProfilerPanel",
]

Suggestion : 5

Sumit Das - Jul 11 , Abhishek Keshri - Jul 30

# File: requirements.txt
   ...
   django - debug - toolbar
   ...

$ pip install django - debug - toolbar

# File core / urls.py

import debug_toolbar # < --NEW

from django.contrib
import admin
from django.urls
import path, include

urlpatterns = [
   ...
   path('__debug__/', include(debug_toolbar.urls)), # < --NEW
   ...
]

# File core / settings.py
   ...
   from decouple
import config
from unipath
import Path
import dj_database_url

import mimetypes # < --NEW

BASE_DIR = Path(__file__).parent

INSTALLED_APPS = [
   ...
   'django.contrib.staticfiles',
   'debug_toolbar', # < --NEW
   ...
]

MIDDLEWARE = [
   ...
   'django.middleware.clickjacking.XFrameOptionsMiddleware',
   'debug_toolbar.middleware.DebugToolbarMiddleware', # < --NEW
   ...
]

INTERNAL_IPS = [# < --NEW '127.0.0.1', # < --NEW] # < --NEW

def show_toolbar(request): # < --NEW
return True # < --NEW

DEBUG_TOOLBAR_CONFIG = {
   # < --NEW "SHOW_TOOLBAR_CALLBACK": show_toolbar,
   # < --NEW
}
# < --NEW

if DEBUG: # < --NEW
import mimetypes # < --NEW
mimetypes.add_type("application/javascript", ".js", True) # < --NEW

$ python manage.py makemigrations
$ python manage.py migrate

$ python manage.py runserver