Date: Mon, 11 Oct 2004 15:22:37 -0500 From: Alan Cox <alc@cs.rice.edu> To: Nate Lawson <njl@FreeBSD.org> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/acpica acpi_cpu.c Message-ID: <20041011202237.GQ9689@cs.rice.edu> In-Reply-To: <200410110606.i9B66g4t036235@repoman.freebsd.org> References: <200410110606.i9B66g4t036235@repoman.freebsd.org>
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On Mon, Oct 11, 2004 at 06:06:42AM +0000, Nate Lawson wrote: > njl 2004-10-11 06:06:42 UTC > > FreeBSD src repository > > Modified files: > sys/dev/acpica acpi_cpu.c > Log: > If bus mastering control is not available (PM2_BLK), don't just disable > C3. Instead, flush caches before entering C3. This may be slower but > provides good power savings. > > Revision Changes Path > 1.44 +28 -17 src/sys/dev/acpica/acpi_cpu.c This has pessimized the performance of my P4. For example, the "buildworld" time has increased by 30 seconds (out of ~30 minutes). Is there any information about my machine that you would like to have? Regards, Alan
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