Message102507
The analysis of instruction cache behavior is interesting---I could definitely see that coming into play given the heavy penalty that one sees going to multiple cores (it's a side effect in addition everything else that goes wrong such as a huge increase in the number of system calls).
I will only point out that messing around with processor affinities is going to be problematic. There are C/C++ extensions to Python that intentionally release the GIL and want to run fully multithreaded across as many cores as might be available. Setting a processor affinities is going to be the exact opposite of what you want for code like that. |
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Date |
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2010-04-07 00:08:21 | dabeaz | set | recipients:
+ dabeaz, loewis, beazley, pitrou, kristjan.jonsson, flox, torsten |
2010-04-07 00:08:21 | dabeaz | set | messageid: <1270598901.29.0.167972116991.issue8299@psf.upfronthosting.co.za> |
2010-04-07 00:08:19 | dabeaz | link | issue8299 messages |
2010-04-07 00:08:18 | dabeaz | create | |
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