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Date: 22 Mar 2008 11:04:32 +0100 From: Andi Kleen <andi@...stfloor.org> To: Allan Menezes <amenezes007@...patico.ca> Cc: linux-kernel@...r.kernel.org Subject: Re: HPL benchmarking linux kernel for shared memory performance. Allan Menezes <amenezes007@...patico.ca> writes: > from filling the register EAX with values above 0x03 > So I was seeing only 2 cores for a quad core in cat /proc/cpuinfo on > all nodes giving me lousy performance for every kernel except some > like 2.6.23.13 and 2.6.23.14. You say some older kernels behaved better than newer ones in the two core oversub configuration? That would be still an issue that should be investigated. After all Linux should run well even with oversubscribing on two cores. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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