Message129962
> Well, those are contrived examples showing the effect of the convoy
> effect induced by those unneeded GIL release/acquire: releasing and
> re-acquiring the GIL comes with a cost (e.g. under Linux, futex are
> really fast in the uncontended case since handled in use space but
> much slower when there's contention), and subverts the OS scheduling
> policy (forcing the thread to drop/re-acquire the GIL make the thread
> block after having consumed a small amount of its time slice and
> increases the context switching rate). I think that releasing and
> re-acquiring the GIL should only be done around potentially blocking
> calls.
Do you want to propose a patch? |
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Date |
User |
Action |
Args |
2011-03-03 12:42:24 | pitrou | set | recipients:
+ pitrou, amaury.forgeotdarc, eric.smith, neologix |
2011-03-03 12:42:22 | pitrou | link | issue11382 messages |
2011-03-03 12:42:22 | pitrou | create | |
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