On Thu, 2005-06-09 at 06:32 +0000, helen monte 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.
>
> How about muti-core? Does each core also have its own run queue? Does
> anyone know how multi-core would work with SMT? Is it possible that they
> work together? Is the following a possible scenario? : A node has two
> processors, each processor has two cores, and each core has two "virtual
> cores". And there are 8 run queues in total.
>
It is always one runqueue per virtual CPU, so dual core has 2 runqueues,
and dual core with SMT has 4 runqueues.
IBM and I believe Intel have chips that support SMT and have 2 cores.
--
SUSE Labs, Novell Inc.
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