Re: How does 2.6 SMP scheduler initially assign a thread to a run queue?
From: Steven Rostedt (rostedt_at_goodmis.org)
Date: 06/08/05
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To: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Date: Wed, 08 Jun 2005 15:25:22 -0400
On Wed, 2005-06-08 at 12:03 -0700, Siddha, Suresh B wrote:
> > > By the way, in an SMT/hyperthreading processor, does the latest kernel
> > > version assign one run queue per physical CPU, or per virtual
> > > processor?
> > >
> >
> > one run-queue per physical CPU
>
> No. Each logical processor has its own runqueue.
I think it is also worth mentioning that the sched domains are used to
help keep processes on the same physical CPU. Little cost associated to
moving a process from one logical CPU to a sibling, where as there is a
big cost in moving it to another physical CPU.
-- Steve
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- Previous message: Dave Jones: "Re: mtrr question"
- In reply to: Siddha, Suresh B: "Re: How does 2.6 SMP scheduler initially assign a thread to a run queue?"
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