palb - Python Apache-Like Benchmark Tool
|Author:||Oliver Tonnhofer <email@example.com>|
palb is a HTTP benchmark tool. The command line interface resembles the Apache benchmark tool ab. It lacks the advanced features of ab, but it supports multiple URLs (from arguments, files, stdin, and Python code).
palb uses pycurl for high-performance URL retrieval and is able to handle more than thousand requests per second with dozens of concurrent requests. If pycurl is not available palb will fall back to Pythons urllib2.
Be sure you have pycurl installed if you expect test results with more than a few hundred requests per second. Check the output of palb:
[...] Using pycurl as URL getter. [...]
This package can be installed with easy_install or from the tarball.
If you are installing from a tarball, run the following command as an administrative user:
python setup.py install
You need setuptools to install palb. If you don't have it, you can use the ez_setup.py script to install it.
If you are installing using easy_install, you don't even need to download anything as the latest version will be downloaded for you from the Python package index:
easy_install --upgrade palb
For best performance install pycurl (see Introduction):
Example & Usage
Simple usage (1 request):
% palb http://example.com/
Multiple requests (2 concurrent, 10 total requests):
% palb -c 2 -n 10 http://example.com/
Alternate between multiple URLs:
% palb -c 2 -n 100 http://example.com/index.html\ http://example.com/foo.html http://example.com/bar.html
Get URLs from file (use - as file name to read from stdin):
% cat test.txt http://example.com/one.html http://example.com/two.html % palb -n 20 -f test.txt
Get URLs from python code:
% cat test.py def urls(args): while True: yield 'http://example.com/' % palb -n 100 -u test:urls
args is a list with all remaining arguments. Use it to pass options to your own URL generators.
Here is an example output:
% palb -c 4 -n 100 -u rndtest:random_urls 'http://localhost:5050/bar/' This is palb, Version 0.1.1 Copyright (c) 2009 Oliver Tonnhofer <firstname.lastname@example.org> Licensed under MIT License Using pycurl as URL getter. Benchmarking (be patient)..... done Average Document Length: 23067 bytes Concurrency Level: 4 Time taken for tests: 6.469 seconds Complete requests: 100 Failed requests: 0 Total transferred: 2306704 bytes Requests per second: 15.46 [#/sec] (mean) Time per request: 250.810 [ms] (mean) Time per request: 62.702 [ms] (mean, across all concurrent requests) Transfer rate: 348.22 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 43 46 3.5 45 73 Processing: 56 205 97.2 188 702 Waiting: 90 100 12.6 94 138 Total: 106 251 97.1 234 750 Percentage of the requests served within a certain time (ms) 50% 239 66% 257 75% 285 80% 289 90% 313 95% 382 98% 613 99% 717 100% 768 (longest request)