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Re: volanoMark 24% regression in 2.6.24-rc6: why a simple patch makes it

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From: Ingo Molnar <mingo@...>
To: Zhang, Yanmin <yanmin_zhang@...>, Linus Torvalds <torvalds@...>
Cc: <travis@...>, LKML <linux-kernel@...>, <akpm@...>, <suresh.b.siddha@...>, <venkatesh.pallipadi@...>, <Yinghai.Lu@...>
Subject: Re: volanoMark 24% regression in 2.6.24-rc6: why a simple patch makes it
Date: Tuesday, December 25, 2007 - 4:25 am

* Zhang, Yanmin <yanmin_zhang@linux.intel.com> wrote:


Linus, please revert fbdcf18df73758, as requested by Yanmin. It was 
noticed before (by Yinghai Lu) that this commit was not needed, but it 
looked a harmless duplication and we incorrectly thought it's only a NOP 
and wanted to fix it in v2.6.25 - but as Yanmin has analyzed it now, it 
creates a sub-optimal sched-domains hierarchy (not setting up the domain 
belonging to the core) when CONFIG_X86_HT=y.

Acked-by: Ingo Molnar <mingo@elte.hu>

nice work Yanmin!

	Ingo
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Messages in current thread:
volanoMark 24% regression in 2.6.24-rc6: why a simple patch ..., Zhang, Yanmin, (Tue Dec 25, 1:14 am)
Re: volanoMark 24% regression in 2.6.24-rc6: why a simple pa..., Ingo Molnar, (Tue Dec 25, 4:25 am)