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Date:      Wed, 01 May 2002 23:43:09 -0700
From:      Terry Lambert <tlambert2@mindspring.com>
To:        Andrew Gallatin <gallatin@cs.duke.edu>
Cc:        John Baldwin <jhb@FreeBSD.org>, freebsd-smp@FreeBSD.org
Subject:   Re: hlt when idle?
Message-ID:  <3CD0DFFD.20F256C6@mindspring.com>
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 wrote:
>  > > Do both CPUs get clock interrupts on x86?
>  >
>  > 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?

Interrupt delivery isn't round-robin.  It just *seems* that way.

-- Terry

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