Re: [patch] sched-2.5.59-A2

[Martin J. Bligh]

>> agreed, i've attached the -B0 patch that does this. The balancing rates
>> are 1 msec, 2 msec, 200 and 400 msec (idle-local, idle-global, busy-local,
>> busy-global).
> 
> I suspect some of these results may be off on NUMA-Q (or any PAE box)
> if CONFIG_MTRR was enabled. Michael, Martin, please doublecheck
> /proc/mtrr and whether CONFIG_MTRR=y. If you didn't enable it, or if
> you compile times aren't on the order of 5-10 minutes, you're unaffected.
> 
> The severity of the MTRR regression in 2.5.59 is apparent from:
> $ cat /proc/mtrr
> reg00: base=0xc0000000 (3072MB), size=1024MB: uncachable, count=1
> reg01: base=0x00000000 (   0MB), size=4096MB: write-back, count=1

Works for me, I have MTRR on.

larry:~# cat /proc/mtrr
reg00: base=0xe0000000 (3584MB), size= 512MB: uncachable, count=1
reg01: base=0x00000000 (   0MB), size=16384MB: write-back, count=1