intel i7 and Hyperthreading

[ivoras at freebsd.org]

On 24/12/2008, Mike Tancsa <mike at sentex.net> wrote:
> At 11:20 AM 12/23/2008, Ivan Voras wrote:
>
>>I just thought of another thing - can you boot an 8-CURRENT kernel
>>on the machine and report the value of kern.sched.topology_spec
>>sysctl? This is to verify how the ULE sees the HTT topology of the CPUs.
>
>
> And buildworld from current
>
> 4,8 and 10
>
> 3287.727u 973.504s 21:18.88 333.1%      -4100+2075k 28490+5472io 10433pf+0w
> 3511.547u 1473.695s 15:30.77 535.6%     -2668+2067k 1604+5381io 8741pf+0w
> 3576.281u 1546.722s 15:38.02 546.1%     -2431+2068k 1570+5448io 8711pf+0w
>

Comparing to your original numbers, it looks like you might have some
debugging enabled there: the original 7.x results went from 13:57 to
11:32, this goes from 21:18 to 15:30. I don't think the world is that
much larger in -CURRENT.