Date: Mon, 30 Mar 2009 12:49:58 -0400 From: John Baldwin <jhb@freebsd.org> To: barney_cordoba@yahoo.com Cc: freebsd-current@freebsd.org Subject: Re: cpuset affinity control from within the kernel Message-ID: <200903301249.58983.jhb@freebsd.org> In-Reply-To: <285609.93285.qm@web63905.mail.re1.yahoo.com> References: <285609.93285.qm@web63905.mail.re1.yahoo.com>
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On Monday 30 March 2009 12:34:33 pm Barney Cordoba wrote: > > --- On Mon, 3/30/09, John Baldwin <jhb@FreeBSD.org> wrote: > > > From: John Baldwin <jhb@FreeBSD.org> > > Subject: Re: cpuset affinity control from within the kernel > > To: freebsd-current@FreeBSD.org, barney_cordoba@yahoo.com > > Date: Monday, March 30, 2009, 11:00 AM > > On Sunday 29 March 2009 3:59:40 pm Barney Cordoba wrote: > > > > > > What tools are available for taskqueues, interrupts, > > etc from within the > > kernel? > > > > You can use BUS_BIND_INTR() for interrupts. You can use > > 'sched_bind() / > > sched_unbind()' in thread contexts. For example, to > > pin taskqueue threads > > (you should only do this for a private taskqueue you create > > though) you can > > simply enqueue a task to the thread that does a > > 'sched_bind()'. > > > > -- > > John Baldwin > > There doesn't seem to be a man page for those functions. Are there some > docs somewhere? Can I bind to a set of cores as can be done with cpuset? They both take a single CPU as the argument, so you can only bind to one. -- John Baldwin
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