Date: Wed, 1 May 2002 15:11:23 -0700 From: Jonathan Mini <mini@freebsd.org> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: John Baldwin <jhb@FreeBSD.ORG>, freebsd-smp@FreeBSD.ORG Subject: Re: hlt when idle? Message-ID: <20020501151123.G30080@stylus.haikugeek.com> In-Reply-To: <15568.20086.979721.992191@grasshopper.cs.duke.edu>; from gallatin@cs.duke.edu on Wed, May 01, 2002 at 04:22:14PM -0400 References: <15567.62317.677224.3470@grasshopper.cs.duke.edu> <XFMail.20020501161528.jhb@FreeBSD.org> <15568.20086.979721.992191@grasshopper.cs.duke.edu>
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Andrew Gallatin [gallatin@cs.duke.edu] wrote : > > No, the interrupts seem to be round-robin, but each clock intr is only > > sent to one CPU unlike on alpha where they are broadcast. > > So each CPU gets (1/num_cpu) * hz clock interrupts/sec? Yes, but because the timer is set to num_cpu*hz, each CPU ends up getting the normal hz interrupts. That's why it runs round-robin but looks like a broadcast. -- Jonathan Mini <mini@freebsd.org> http://www.haikugeek.com "He who is not aware of his ignorance will be only misled by his knowledge." -- Richard Whatley To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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