Date: Sat, 25 Dec 2010 09:52:15 +0200 From: Alexander Motin <mav@FreeBSD.org> To: Julian Elischer <julian@freebsd.org> Cc: Stefan Farfeleder <stefanf@freebsd.org>, freebsd-current@freebsd.org Subject: Re: eventtimers hiccups Message-ID: <4D15A2AF.8090207@FreeBSD.org> In-Reply-To: <4D1579B8.1070808@freebsd.org> References: <20101224143124.GC2642@mole.fafoe.narf.at> <4D1579B8.1070808@freebsd.org>
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Julian Elischer wrote: > On 12/24/10 6:31 AM, Stefan Farfeleder wrote: >> since the new eventtimers code was committed, my notebook (Dell >> Precision m4400) sometimes hangs for 10-30 seconds, mostly during load. >> In these periods I can move the mouse pointer but time (as perceived by >> time(1)) seems to be halted. This is accompanied by lots of calcru: >> runtime went backwards message, though sometimes they only show up when >> shutting down. >> >> I now set kern.eventtimer.periodic=1 and have not experienced such >> freezes since then. But it would be nice if the default settigs would >> work. Is there something I could do to help fixing this? >> BTW, I'm not using powerd. > > I also need to set > > kern.eventtimer.periodic=1 > > if I want my kernel to boot under Xen. > > unfortunately it doesn't fix the problem when it doen't shut down. > (this is a Xen VPS from rootbsd.com) This is different problem. I've observed this myself too. On my short experiments system completely hanged immediately as soon as I was enabling one-shot mode on LAPIC timer, not necessary during boot. Unluckily I had no enough system access time even to get idea about what's going on there. -- Alexander Motin
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