[issue26274] Add CPU affinity to perf.py

[STINNER Victor]

STINNER Victor added the comment:

Hum, I modified your change:

* only display a warning if the option is used but taskset doesn't work
* remove check on Linux: taskset might be available on other platforms, it doesn't really matter to check the OS, we already check if the command works
* try to run "taskset --cpu-list 0 python -c pass" instead of "taskset -V" to check if taskset works or not

What do you think?

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Added file: http://bugs.python.org/file41793/affinity_warning.patch

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