[Python-Dev] Memory benchmarking? (original) (raw)

M.-A. Lemburg mal at egenix.com
Thu Nov 29 12:19:51 CET 2007

On 2007-11-29 11:52, Titus Brown wrote:

Hi all,

is there a good, or standard memory benchmarking system for Python? pybench doesn't return significantly different results when Python 2.6 is compiled with pymalloc and without pymalloc. Thinking on it, I'm not too surprised -- pybench probably benchmarks a lot of stuff -- but some guidance on how/whether to benchmark different memory allocation schemes would be welcome.

pybench focuses on runtime performance, not memory usage. It's way of creating and deleting objects is also highly non-standard when compared to typical use of Python in real life applications.

It's also rather difficult to benchmark memory allocation, since most implementations work with some sort of pre-allocation, buffer pools or free lists.

If you want to use a similar approach as pybench does, ie. benchmark small parts of the interpreter instead of generating some grand total, then you'd probably have to do this by spawning a separate process per test.

refs:

http://code.google.com/p/google-highly-open-participation-psf/issues/detail?id=105&colspec=ID%20Status%20Summary http://evanjones.ca/memoryallocator/ http://www.advogato.org/person/wingo/diary/225.html

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