Date: Sun, 20 Jul 2008 01:51:32 +0300 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: "Alexandre \"Sunny\" Kovalenko" <gaijin.k@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: Broken APIC on my laptop or bug in FreeBSD? Message-ID: <87tzelebd7.fsf@kobe.laptop> In-Reply-To: <87mykd5wsl.fsf@kobe.laptop> (Giorgos Keramidas's message of "Sun, 20 Jul 2008 01:33:30 %2B0300") References: <87prpcjrsk.fsf@kobe.laptop> <1216501388.971.6.camel@RabbitsDen> <87mykd5wsl.fsf@kobe.laptop>
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On Sun, 20 Jul 2008 01:33:30 +0300, Giorgos Keramidas <keramida@ceid.upatras.gr> wrote: > On Sat, 19 Jul 2008 17:03:08 -0400, "Alexandre \"Sunny\" Kovalenko" <gaijin.k@gmail.com> wrote: >> Are you by any chance using cx_lowest="C3" (or "LOW") in your >> rc.conf? I have seen these symptoms (including mouse inducement of >> the typed characters) when cpu0 on my laptop went to C3. Nowadays I >> have C3 on cpu1 and C2 on cpu0 and life is good. Then again, I am >> running RELENG_7 (which AFAICR was 7-CURRENT at the time), so YMMV. > > Ah, good point. I have indeed performance_cx_lowest="LOW" in rc.conf. > > I'll remove that and try again with the APIC enabled... That was it. Thanks! # sysctl -a | egrep -e 'cx_(usage|support)' dev.cpu.0.cx_supported: C1/1 C2/1 C3/57 dev.cpu.0.cx_usage: 100.00% 0.00% 0.00% dev.cpu.1.cx_supported: C1/1 C2/1 C3/57 dev.cpu.1.cx_usage: 100.00% 0.00% 0.00% With anything except "C1" the CPU is obviously too slow to do anything useful :-)
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