| Date | Wed, 13 Feb 2013 22:17:50 +0800 | From | Alex Shi <> | Subject | Re: [patch v4 01/18] sched: set SD_PREFER_SIBLING on MC domain to reduce a domain level |
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On 02/12/2013 06:11 PM, Peter Zijlstra wrote: > On Thu, 2013-01-24 at 11:06 +0800, Alex Shi wrote: >> The domain flag SD_PREFER_SIBLING was set both on MC and CPU domain at >> frist commit b5d978e0c7e79a, and was removed uncarefully when clear up >> obsolete power scheduler. Then commit 6956dc568 recover the flag on CPU >> domain only. It works, but it introduces a extra domain level since this >> cause MC/CPU different. >> >> So, recover the the flag in MC domain too to remove a domain level in >> x86 platform.
May I still miss the points of this patch: Without this patch, the domain levels on my machines are: SMT, MC, CPU, NUMA
with this patch, the domain levels are: SMT, MC, NUMA
-- Thanks Alex
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