[pypy-dev] pypy + cProfile

[Omer Katz]

That's insane. Profiling slows down the application. Always.
Are you able to reproduce this on other scripts as well?

2015-05-11 21:02 GMT+03:00 Stanislav Bohm <stanislav.bohm at vsb.cz>:

> Hi
>
> I have observed that Pypy is faster when cProfile is enabled than its
> normal execution.
> I would like to ask if it is a normal behavior or a kind of anomaly?
>
> E.g. one of my benchmarks:
>
> Pypy: ~24.5s
> Pypy + cProfile: ~19s
> CPython: ~22s
>
> Tested with 2.5.1+dfsg-1~ppa1+ubuntu14.04, but I have observed a similar
> behavior with older versions of Pypy shipped with Ubuntu 14.10 and 15.04.
> My application is a pure python application that communicates through
> sockets. (It is a state-space analytical tool that communicates with a
> modified Valgrind process through TCP/IP connection).
>
> A replication of results:
>
> Build: https://github.com/spirali/aislinn (Installation instructions:
> http://verif.cs.vsb.cz/aislinn/doc/userguide.html#_installation)
>
> cd aislinn/tests/complex/workers
> ../../../bin/mpicc workers.c # build an analyzed program
> time pypy ../../../src/aislinn/aislinn.py -p4 ./a.out 10 90
> time pypy -m cProfile ../../../src/aislinn/aislinn.py -p4 ./a.out 10 90
> time python ../../../src/aislinn/aislinn.py -p4 ./a.out 10 90
>
> Best regards,
> Stanislav Bohm
>
>
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