Date: Mon, 26 Jul 2004 10:52:23 -0400 From: Don Bowman <don@sandvine.com> To: 'James' <haesu@towardex.com>, freebsd-net@freebsd.org Subject: RE: device polling takes more CPU hits?? Message-ID: <FE045D4D9F7AED4CBFF1B3B813C85337051D9433@mail.sandvine.com>
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From: James [mailto:haesu@towardex.com] > Hi all, > ... > > Any idea why device polling is kind of having... negative > impact? Is this b/c > I have SMP compiled on a box that really doesn't have two > cpu's?? Is SMP+APIC_IO > support even required for HTT use? I would post the output of 'sysctl kern.polling', its likely some of the tuning there is insufficient. What do you have HZ set to (sysctl kern.clockrate)? I would probably have it set to ~1000. You will want 'machdep.cpu_idle_hlt=1'. --don
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