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Date:      Sun, 20 Mar 2005 02:53:39 +0100
From:      Christian Brueffer <chris@unixpages.org>
To:        freebsd-stable@freebsd.org
Subject:   cpufreq related RELENG_5 regression?
Message-ID:  <20050320015339.GB85807@unixpages.org>

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Hi,

I have the following situation here:

Box A serves as gateway for my local network and also exports some
filesystems via NFS.  The shares are mounted on box B.  Playing a movie
from one of the NFS shares on box B works fine.
When I try to transfer a file from outside the LAN to box C, which
resides inside the LAN, the movie on box B starts to stagger.

Box A runs RELENG_5, using a kernel from just before the cpufreq merge
works ok (movie doesn't stagger), a kernel from shortly after the merge
does not work (movie staggers).
Setting "performance_cpu_freq=3D"HIGH"" in rc.conf fixes this, so there
seems to have been a change in the defaults.

Box A is an i386 SMP machine.

Kernel config + dmesg:

http://people.freebsd.org/~brueffer/LORIEN
http://people.freebsd.org/~brueffer/dmesg.lorien

Can anyone confirm this?

BTW, there is code in sys/kern/kern_cpu.c to export the current processor
speed via sysctl, but the sysctl doesn't show up here.

- Christian

--=20
Christian Brueffer	chris@unixpages.org	brueffer@FreeBSD.org
GPG Key:	 http://people.freebsd.org/~brueffer/brueffer.key.asc
GPG Fingerprint: A5C8 2099 19FF AACA F41B  B29B 6C76 178C A0ED 982D

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