Python performance test script?

Question

I'm looking for a test script in Python to test a few things to see how fast/slow it completes on various systems.

Just some simple commands that are looped to make the script take say 10 second to complete and a report of how much cpu it uses, how much memory and how long it took to complete?

I guess for the memory part we would use memory_profiler, I guess psutil for the cpu calling out 5 readings one at the start (all separated by 2 seconds) then the average cpu usage used, 1 in the middle of the script and 5 at the end (all separated by 2 seconds)

How best would I go about this or is there already a script avaliable, I can't find anything that is good enough for this.

Community · Accepted Answer · 2017-04-13 12:36:28Z

1

IPython has %timeit:

%timeit foo()

line_profiler and memory_profiler can be run from the IPython console:

%load_ext line_profiler
%load_exp memory_profiler

%lprun -f foo foo()
%mprun -f foo foo()

More details: http://www.huyng.com/posts/python-performance-analysis/

Average CPU is... trickier. Linux does report a kind of average CPU usage over time, check this: https://unix.stackexchange.com/questions/145247/understanding-cpu-while-running-top-command

edited Apr 13, 2017 at 12:36

CommunityBot

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answered Dec 17, 2015 at 22:50

CookieOfFortune

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3 Comments

Ryflex Over a year ago

Problem is I can't use iPython in my situation.

ShadowRanger Over a year ago

@Ryflex: ipython's %timeit is just a simplified way to use timeit.repeat which is part of the Python batteries available everywhere. Only difference is repeat requires the setup to import everything it needs (including stuff from __main__ where %timeit gets the stuff from __main__ automatically), and requires you to tweak number yourself instead of autoranging, but the feature is available no matter what.

CookieOfFortune Over a year ago

@Ryflex IPython just makes it easier. Check out the link I provided, you can do all of this without IPython.

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