SuperMicro i7 (UP) - very slow performance

[Ian Smith]

On Thu, 23 Sep 2010, Alexander Motin wrote:
 > Bryce wrote:
 > > I don't think it is temperature, I have never seen temps above the low
 > > 60's C and the speed never goes down from 2.8 Ghz.  This is what I see
 > > when running your dd for a while:
 > > 
 > > bryce at tahiti[~]>sysctl -a | grep temperature
 > > dev.cpu.0.temperature: 55.0C
 > > dev.cpu.1.temperature: 55.0C
 > > dev.cpu.2.temperature: 51.0C
 > > dev.cpu.3.temperature: 52.0C
 > > dev.cpu.4.temperature: 59.0C
 > > dev.cpu.5.temperature: 61.0C
 > > dev.cpu.6.temperature: 51.0C
 > > dev.cpu.7.temperature: 52.0C
 > > bryce at tahiti[~]>sysctl -n dev.cpu.0.freq
 > > 2801
 > 
 > Looks not bad, but I would checked it during good compilation, using all
 > cores.
 > 
 > Just to compare, my Core i7-870 with boxed cooler reports:
 >  31C being idle with tuned power management,
 >  53C being idle without any power management,
 >  85C during `make -j16`.
 > That system did `make -j16 universe` in about 3 hours AFAIR.
 > 
 > PS: AFAIK dev.cpu.0.freq won't report you if frequency was lowered due
 > to overheating.

Thanks, I've often wondered about that (among other things :)

So not looking much like overheating.  But don't these messages requoted 
below seem at all significant?  At least, I've never seen them before:

> est0: <Enhanced SpeedStep Frequency Control> on cpu0
> est0: Invalid id16 (set, cur) = (20, 21)
> est0: Can't check freq 2667, it may be invalid
> est0: Invalid id16 (set, cur) = (19, 21)
> est0: Can't check freq 2533, it may be invalid
> est0: Invalid id16 (set, cur) = (18, 21)
> est0: Can't check freq 2400, it may be invalid
> est0: Invalid id16 (set, cur) = (17, 21)
> est0: Can't check freq 2267, it may be invalid
> est0: Invalid id16 (set, cur) = (16, 21)
> est0: Can't check freq 2133, it may be invalid
> est0: Invalid id16 (set, cur) = (15, 21)
> est0: Can't check freq 2000, it may be invalid
> est0: Invalid id16 (set, cur) = (14, 21)
> est0: Can't check freq 1867, it may be invalid
> est0: Invalid id16 (set, cur) = (13, 21)
> est0: Can't check freq 1733, it may be invalid
> est0: Invalid id16 (set, cur) = (12, 21)
> est0: Can't check freq 1600, it may be invalid

cheers, Ian