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Date: Mon, 26 Oct 2009 18:19:34 +0000 From: Matthew Garrett <mjg59@...f.ucam.org> To: Robert Bradbury <robert.bradbury@...il.com> Cc: linux-kernel@...r.kernel.org Subject: Re: Broken ondemand scheduler in Linux 2.6.30+ on Pentium IVs The ondemand governor assumes that frequency transitions occur at low latency. This isn't usefully the case with p4-clockmod, and running ondemand there will generally show obvious performance regressions. If you have a recent enough P4 use the acpi-cpufreq driver instead. If not, the conservative governor should still work and is a better fit to the hardware. -- Matthew Garrett | mjg59@...f.ucam.org -- 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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