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Date:      Thu, 11 Jul 2002 17:40:36 +0100
From:      David Malone <dwmalone@maths.tcd.ie>
To:        Ken Menzel <kenm@icarz.com>
Cc:        freebsd-stable@FreeBSD.ORG
Subject:   Re: tuning(7) request was: Re: Performance boost with kernel options in FBSD 4.6
Message-ID:  <20020711164036.GB52376@walton.maths.tcd.ie>
In-Reply-To: <04a601c228dc$c6dbb980$681663cf@icarz.com>
References:  <20020710104730.L10343-100000@klima.physik.uni-mainz.de> <04a601c228dc$c6dbb980$681663cf@icarz.com>

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On Thu, Jul 11, 2002 at 09:13:41AM -0400, Ken Menzel wrote:
> If it's possible this makes a difference can we get a note about HZ
> added to the tuning(7) man page?

Increasing HZ may have a deterimental effect on the performance of
some workloads (I'd guess CPU intensive ones would suffer, though
I haven't check if there is a measurable effect on modern hardware).

If we had some objective measurements then it might be possible to
write a section on tuning HZ.

	David.

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