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Date:      Thu, 24 Jan 2008 18:58:52 +0100
From:      Ivan Voras <ivoras@freebsd.org>
To:        freebsd-current@freebsd.org
Subject:   Re: Weird performance behaviour in 7.0
Message-ID:  <fnajkt$838$1@ger.gmane.org>
In-Reply-To: <18328.45282.562906.708945@celery.zuhause.org>
References:  <18328.45282.562906.708945@celery.zuhause.org>

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Bruce Albrecht wrote:
> This is my first Q6600 based system, and my first 7.0 system, and my
> first AMD-64 system and my first ZFS base system, and I'm seeing
> something really strange.  Every now and then, processes run really
> slowly, like at 1/600th (or worse) than it ought to, but it racks up
> the CPU time as though it's running full tilt.

Are you running powerd?

Also, cpufreq driver was included in the GENERIC kernel in 7.0 (it was=20
optional in 6.x), so it might also cause problems somehow. To verify=20
this, try building a kernel without cpufreq.

Also, does your BIOS do any power-saving gimmicks?



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