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Date:      Fri, 20 Oct 2006 14:18:57 +0200
From:      Ivan Voras <ivoras@fer.hr>
To:        freebsd-hackers@freebsd.org
Subject:   Re: 6.1-STABLE hangs, ddb shows 'acpi_timer_read'?
Message-ID:  <ehaerh$pn9$1@sea.gmane.org>
In-Reply-To: <82C14B40C9061504218D7585@Unsupported>
References:  <D5A35FC423766495F2B3D855@Unsupported>	<20061020110151.GU55428@deviant.kiev.zoral.com.ua> <82C14B40C9061504218D7585@Unsupported>

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Karl Pielorz wrote:

> Thanks for the link! Anyone know much is all that lot (such as 
> INVARIANTS/WITNESS) etc. likely to slow the machine down? - A few 
> percent? More?

Huge. See http://wikitest.freebsd.org/WitnessPerformance

> 
> I'm just a little hesitant to put it all in, and end up with a machine 
> that's 80% slower :(

Try switching timecounter to TSC, and keep an eye on ntpd to see if your 
time drifts too much.




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