[New-bugs-announce] [issue26692] cgroups support in multiprocessing

[Satrajit Ghosh]

New submission from Satrajit Ghosh:

multiprocessing cpucount returns the number of cpus on the system as returned by /proc/cpuinfo. 

this is true even on machines where linux kernel cgroups is being used to restrict cpu usage for a given process. this results in significant thread swithcing on systems with many cores. 

some ideas have been implemented in the following repos to handle cgroups:

https://github.com/peo3/cgroup-utils
http://cpachecker.googlecode.com/svn-history/r12889/trunk/scripts/benchmark/runexecutor.py

it would be nice if multiprocessing was a little more intelligent and queried process characteristics.

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components: Library (Lib)
messages: 262881
nosy: Satrajit Ghosh
priority: normal
severity: normal
status: open
title: cgroups support in multiprocessing
type: behavior

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue26692>
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