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Date: Thu, 24 Nov 2005 15:43:59 -0500
From: Kris Kennaway <kris@obsecurity.org>
To: Markus Trippelsdorf <Markus@trippelsdorf.de>
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Subject: Re: so much clock interrupts?!
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On Thu, Nov 24, 2005 at 07:40:40AM +0000, Markus Trippelsdorf wrote:
> On 2005-11-24, Wojciech Puchar <wojtek@tensor.3miasto.net> 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?!
>=20
> Yes it is.
> That's why I have kern.hz=3D"100" in my /boot/loader.conf .

Have you been able to measure a performance benefit from reducing it?
Have you shown that reducing it does not cause your performance to
*drop*?  It was increased for a reason..it actually increases
performance on some workloads.

Kris




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