Pyblosxom and mod_wsgi benchmark

Running our custom pyblosxom engine with mod_wsgi and Apache disk-based cache enabled is currently providing a performance of roughly 170 requests per second as of a measurement running 50 concurrent requests and a total of 1000 requests against the index page as of 6th September 2008.

There are some potential improvements and lighttpd or a similar high performance webserver could probably beat these numbers by a magnitude of a few thousand requests. We will be likely testing such a setup in the future. In our tests, lighttpd itself can handle around 1012.06 requests per second for a FastCGI served lightweight PHP script with no database backend usage.

Server Software:        Apache
Server Hostname:        blog.subreption.com
Server Port:            80

Document Path:          /hub
Document Length:        24112 bytes

Concurrency Level:      50
Time taken for tests:   5.882 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      24289000 bytes
HTML transferred:       24112000 bytes
Requests per second:    170.02 [#/sec] (mean)
Time per request:       294.088 [ms] (mean)
Time per request:       5.882 [ms] (mean, across all concurrent requests)
Transfer rate:          4032.75 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.2      0       1
Processing:    17  287  51.1    299     490
Waiting:       16  286  51.2    298     490
Total:         18  287  51.0    299     491

Percentage of the requests served within a certain time (ms)
  50%    299
  66%    313
  75%    321
  80%    325
  90%    338
  95%    351
  98%    368
  99%    375
 100%    491 (longest request)