Date: Wed, 23 Nov 2005 21:39:28 -0500 From: Kris Kennaway <kris@obsecurity.org> To: Wojciech Puchar <wojtek@tensor.3miasto.net> Cc: freebsd-questions@freebsd.org Subject: Re: so much clock interrupts?! Message-ID: <20051124023928.GA13075@xor.obsecurity.org> In-Reply-To: <20051124013438.T8326@chylonia.3miasto.net> References: <20051124013438.T8326@chylonia.3miasto.net>
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[-- Attachment #1 --] On Thu, Nov 24, 2005 at 01:35:41AM +0100, Wojciech Puchar wrote: > that's what i see in systat with FreeBSD 6.0/i386-SMP > > > 540 534 99 pdwak 2000 cpu0: > time > 16825 pdpgs 2000 cpu1: > time > > > on FreeBSD 5.3 live CD i have 100 not 2000 times per second > > isn't it too much?! No, it's just a consequence of HZ=1000 instead of HZ=100. I've measured this carefully and I can't see it causing a penalty on my workloads. It apparently gives a benefit on machines that do a lot of network I/O. Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDhSffWry0BWjoQKURAi+EAJ92xjXMJfU+4kknmmNZYM6A+OZD4QCffgxS Mjeyz7sVnmBEverLq0O9qR0= =3D++ -----END PGP SIGNATURE-----
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