ULE vs. 4BSD in RELENG_7

[Nick Evans]

> This is interesting.  I have had a couple of laptop users report success 
> in using lower power saving modes with ULE.  Are these core temp 
> observations repeatable?
> 
> Thanks,
> Jeff
> 
> >
> > Thanks again for all your help! Please let me know if/when I can do
> > anything else to help out.
> >
> > Regards,
> > Josh
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After this was mentioned I tried coretemp on my 8-core system and am seeing
the same behavior. 

Idle:

dev.cpu.0.temperature: 48
dev.cpu.1.temperature: 45
dev.cpu.2.temperature: 41
dev.cpu.3.temperature: 41
dev.cpu.4.temperature: 44
dev.cpu.5.temperature: 44
dev.cpu.6.temperature: 41
dev.cpu.7.temperature: 42


After 10-15 minutes of 8 distributed.net crunchers running:

dev.cpu.0.temperature: 63
dev.cpu.1.temperature: 59
dev.cpu.2.temperature: 55
dev.cpu.3.temperature: 54
dev.cpu.4.temperature: 58
dev.cpu.5.temperature: 59
dev.cpu.6.temperature: 56
dev.cpu.7.temperature: 56

Interesting distribution. Cores 2, 3, 6 and 7 consistently run cooler than
0, 1, 4 and 5. This behavior has been consistent since I started looking at
it a few days ago. Is there anyway to tell which package a particular core is
attached to or is it sequential 0-3 on package 1, 4-7 on package 2?

Nick