Date: Thu, 09 Jun 2011 19:40:18 +0300 From: Alexander Motin <mav@FreeBSD.org> To: Andrey Smagin <samspeed@mail.ru> Cc: FreeBSD-Current <freebsd-current@freebsd.org> Subject: Re: 2 day GENERIC-current eat 2 CPU core at 100% Message-ID: <4DF0F772.7020004@FreeBSD.org> In-Reply-To: <E1QUcnO-0007fe-00.samspeed-mail-ru@f109.mail.ru> References: <201106071034.01475.hselasky@c2i.net> <mailpost.1307467793.8724611.13378.mailing.freebsd.current@FreeBSD.cs.nctu.edu.tw> <4DEFB2B2.3020404@FreeBSD.org> <E1QUcnO-0007fe-00.samspeed-mail-ru@f109.mail.ru>
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Andrey Smagin wrote: > Hi, yesterday I tried switch event timer on i8254 - it do nothing. > I disabled hyperthreading - now eat from 50% to 100% > All dmesg is lines: > (noperiph:ata3:0:-1:-1): rescan already queued > (noperiph:ata3:0:-1:-1): rescan already queued > (noperiph:ata2:0:-1:-1): rescan already queued > (noperiph:ata3:0:-1:-1): rescan already queued > (noperiph:ata3:0:-1:-1): rescan already queued > .... > I boot FreeBSD from USB with no ATA - may be it is. These messages are not what I expected to see, but they tell me that your problem may be SATA related. I've got the same Intel D525MW board and think reproduced the problem. I hope I've even fixed it. :) Retry please with fresh CURRENT sources or at least with this patch applied: http://svn.freebsd.org/changeset/base/222897 > Wed, 08 Jun 2011 20:34:42 +0300 письмо от Alexander Motin <mav@FreeBSD.org>: >> On 07.06.2011 20:12, Andrey Smagin wrote: >>> vmstat -i >>> interrupt total rate >>> irq16: uhci3 205 0 >>> irq20: hpet0 147924380 1126 >>> irq23: uhci0 ehci0 522517 3 >>> total 148447102 1130 >>> >>> Tue, 7 Jun 2011 10:34:01 +0200 письмо от Hans Petter >> Selasky<hselasky@c2i.net>: >>>> On Tuesday 07 June 2011 10:09:47 Andrey Smagin wrote: >>>>> I upgraded 2 day ago from 2010xxxx-current box on Intel D525MW. >>>>> System very slow down after that. >>>>> kern.hz=50 >>>>> in systat -vmstat - 140hpet interrupts/s >>>>> at top 25% in interrupts 25% in system >>>>> because hyperthreading system found 4 cpu. >>>> What does vmstat -i output? >> Send me please full verbose dmesg and output of the `sysctl >> kern.eventtimer` and `sysctl kern.timecounter`. >> >> Try to switch to another timer: >> sysctl kern.eventtimer.timer=LAPIC >> >> Try to switch to periodic timers (instead): >> sysctl kern.eventtimer.periodic=1 -- Alexander Motin
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