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Date: Sun, 16 Mar 2008 14:44:00 +0100
From: Kris Kennaway <kris@FreeBSD.org>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Cant get system to 0% idle
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Tuc at T-B-O-H.NET wrote:
> Hi,
> 
> 	I have 2 systems, Dual Xenon's, both bought at the same time (1
> serial number away from each other). At one time both ran 5.3, and both
> could get 0% idle (Seti@Home, 4 processes). I've upgraded one to 5.5,
> and now find ever since then I can't get the system below about 19% idle.
> (I've even used benchmarks/ubench). 
> 
> 	Short of the typical "Upgrade to 7" which I can't do (And for 
> those jokers out there, can't go to 6 either).... Any ideas why this is
> happening?

Because you're running FreeBSD 5?  Seriously.  "SMP performance" and 
"FreeBSD 5.x" don't belong together in the same sentence.  Even if you 
don't like that advice, it is true.

Kris