Cprofile--python Performance analysis Tools

Python comes with several performance Analysis modules: Profile, Cprofile, and Hotshot, all of which are basically the same way, nothing more than a pure Python or C-written module. This article describes cprofile.

Example

Import  Time def func1 ():     = 0    for in range (1000000):        + =  idef  Func2 ():    time.sleep (ten) func1 () Func2 ()

Run

del. py

Run results

Results analysis
Performed 6 functions, which cost a total of 10.138s, sorted by the name of the running function as the result output.

Run the script

del del. py

This module directly saves the profile results, which can be used to further analyze the output results and run

" import pstats; p=pstats. Stats (' del.out '); P.print_stats ()"

Result (Random)

You can set the sort by how much time it takes to sort

" import pstats; p=pstats. Stats (' del.out '); P.sort_stats (' time '). Print_stats ()"

Sort_stats supports the following parameters:

Calls, cumulative, file, line, module, name, NFL, Pcalls, Stdname, time

The Pstats module also supports interactive

Cprofile--python Performance analysis Tools