[haiku-bugs] [Haiku] #1069: Create thread scheduler with CPU affinity
- From: "Duggan" <trac@xxxxxxxxxxxx>
- Date: Thu, 20 Oct 2011 22:23:07 -0000
#1069: Create thread scheduler with CPU affinity
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Reporter: axeld | Owner: meianoite
Type: enhancement | Status: new
Priority: normal | Milestone: R1
Component: System/Kernel | Version: R1/pre-alpha1
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Attachment added (by Duggan):
scheduler.diff (15.5 KB) - This is an intermediate patch to some work I'm doing
on the extant affine scheduler. Theoretically hyperthreaded cores should share
ready queues now and there's a little support for soft affinities for teams. I
can't test the hyperthreading code so if you guys can test this on various
Intel and AMD processors and provide some feedback (mostly syslogs, bt's if it
crashes) I would appreciate it. Future work includes proper load balancing and
affinities, API functions to support affinities, possibly a thread class (a la
BeAPI) that provides an OO wrapper to the API functions. Other changes I would
like to make as well include shutting down unnecessary cores when the load is
light and reenabling them as the load increases as well as potentially doing
away with the global scheduler lock in favour of per-queue locks. Again, this
is an intermediate patch so there's likely alot of problems with it besides
bugs (but I did run it through the style checker and did the diff from trunk
this time ;) ... not saying there's not still style errors, just not in my
code). Cheers!
View the file at http://dev.haiku-os.org/attachment/ticket/1069/scheduler.diff
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Ticket URL: http://dev.haiku-os.org/ticket/1069
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