[pypy-dev] pypy + cProfile

[Stanislav Bohm]

I have tried some standard benchmarks and my other python programs, and 
cProfile makes things slower.
Hence, Aislinn is the only program where I can reproduce the weird behavior.

Stanislav Bohm

On 05/13/2015 04:24 PM, Omer Katz wrote:
> 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 
> <mailto: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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>

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