Weird performance behaviour in 7.0

Ivan Voras ivoras at
Thu Jan 24 09:59:05 PST 2008

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 
optional in 6.x), so it might also cause problems somehow. To verify 
this, try building a kernel without cpufreq.

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

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