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Date: Mon, 25 Aug 2008 12:37:02 +0200 From: Peter Zijlstra <peterz@...radead.org> To: Török Edwin <edwintorok@...il.com> Cc: Ingo Molnar <mingo@...e.hu>, rml@...h9.net, Linux Kernel <linux-kernel@...r.kernel.org>, "Thomas Gleixner mingo@...hat.com" <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com> Subject: Re: Quad core CPUs loaded at only 50% when running a CPU and mmap intensive multi-threaded task On Mon, 2008-08-25 at 13:22 +0300, Török Edwin wrote: > > >> Why did 2.6.24 seem to work better? > >> > > That might cause some overhead on very high context switch rates. > > No difference, and turning off the other features from sched_features > doesn't seem to help either. OK, I'll poke a little more at is later today to see if I can spot something -- 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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