django-cemplate

Django template rendering code modified to be compiled with cython.

Rationale

Django rendering code is slow. This is a drop-in module that replaces parts of the django.template with cython-compiled code to make it faster.

Installation

django_speedboost is currently compiled for django 1.8.7

$ pip install django_speedboost

should do the trick at any time.

if you get missing header compilation errors, just install your distribution's python library development headers. e.g.

$ sudo apt-get install libpython-dev

How it works

The module setups a .pth file that uses an import hook to load the django_speedboost modules instead of the original django.template modules at runtime.

Results

Setting Django with WSGI behind Apache 2, ab shows a consistent 13% reduction in load times on an Admin page with loads of inlines and fields:

(venv)ddalex@watson ~/Projects/backend(T7569)$ diff --side-by-side without_so.txt with_so.txt
This is ApacheBench, Version 2.3 <$Revision: 1604373 $>     This is ApacheBench, Version 2.3 <$Revision: 1604373 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.ze   Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.ze
Licensed to The Apache Software Foundation, http://www.apache   Licensed to The Apache Software Foundation, http://www.apache

Benchmarking guest (be patient).....done            Benchmarking guest (be patient).....done


Server Software:        Apache/2.4.7                Server Software:        Apache/2.4.7
Server Hostname:        guest                   Server Hostname:        guest
Server Port:            80                  Server Port:            80

Document Path:          /admin/model/object/57/     Document Path:          /admin/model/object/57/
Document Length:        619067 bytes                Document Length:        619067 bytes

Concurrency Level:      2                   Concurrency Level:      2
Time taken for tests:   15.724 seconds                | Time taken for tests:   13.932 seconds
Complete requests:      20                  Complete requests:      20
Failed requests:        0                   Failed requests:        0
Total transferred:      12390600 bytes              Total transferred:      12390600 bytes
HTML transferred:       12381340 bytes              HTML transferred:       12381340 bytes
Requests per second:    1.27 [#/sec] (mean)           | Requests per second:    1.44 [#/sec] (mean)
Time per request:       1572.402 [ms] (mean)              | Time per request:       1393.243 [ms] (mean)
Time per request:       786.201 [ms] (mean, across all concur | Time per request:       696.621 [ms] (mean, across all concur
Transfer rate:          769.54 [Kbytes/sec] received          | Transfer rate:          868.49 [Kbytes/sec] received

Connection Times (ms)                       Connection Times (ms)
              min  mean[+/-sd] median   max                       min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       1           | Connect:        0    0   0.0      0       0
Processing:   624 1570 723.5   2008    2313           | Processing:   585 1391 578.5   1764    1991
Waiting:      621 1566 722.6   1999    2311           | Waiting:      572 1381 578.2   1741    1988
Total:        624 1570 723.5   2008    2313           | Total:        585 1391 578.5   1764    1991

Percentage of the requests served within a certain time (ms)    Percentage of the requests served within a certain time (ms)
  50%   2008                              |   50%   1764
  66%   2106                              |   66%   1845
  75%   2237                              |   75%   1917
  80%   2263                              |   80%   1936
  90%   2288                              |   90%   1981
  95%   2313                              |   95%   1991
  98%   2313                              |   98%   1991
  99%   2313                              |   99%   1991
 100%   2313 (longest request)                    |  100%   1991 (longest request)