2 day GENERIC-current eat 2 CPU core at 100%

[Andrey Smagin]

Great thanx ! It working ! :) 


Thu, 09 Jun 2011 19:40:18 +0300 письмо от Alexander Motin <mav at FreeBSD.org>:

> 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 at 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 at 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