Subject: RE: PROBLEM: Oops when doing disk heavy disk I/O
From: Sergio Monteiro Basto <sergio@sergiomb.no-ip.org>
Reply-To: sergio@sergiomb.no-ip.org
To: Michael <michael.sallaway@gmail.com>
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <453eae16.5da1afe7.3681.ffffb56e@mx.google.com>
References: <453eae16.5da1afe7.3681.ffffb56e@mx.google.com>
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Date: Wed, 25 Oct 2006 01:41:46 +0100
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On Wed, 2006-10-25 at 10:21 +1000, Michael wrote:
> =20
> > -----Original Message-----
> > From: Sergio Monteiro Basto [mailto:sergio@sergiomb.no-ip.org]=20
> > Sent: Wednesday, 25 October 2006 3:27 AM
> >=20
> > Hi,=20
> > please boot with "report_lost_ticks" like
> > http://marc.theaimsgroup.com/?l=3Dlinux-kernel&m=3D115545986619977&w=3D=
2
> > and see if you have=20
> > time.c: Lost n timer tick(s)!
> >=20
> > and=20
> > cat /sys/devices/system/clocksource/clocksource0/
> >=20
> > cat /sys/devices/system/clocksource/clocksource0/current_clocksource
> >=20
> >=20
>=20
> Hi,
>=20
> Yep, seems to be losing some ticks -- I'm not sure what that means, but i=
s
> it bad? :-)
>=20

well I don't know for sure , but after this initials Lost Timer tick ,
it appears more after a few time of uptime ?=20


> [ root @ barbossa : ~ ] # dmesg | grep tick
> Command line: root=3D/dev/md1 ro report_lost_ticks
> Kernel command line: root=3D/dev/md1 ro report_lost_ticks
> time.c: Lost 1 timer tick(s)! rip release_console_sem+0x196/0x20c)
> time.c: Lost 12 timer tick(s)! rip setup_boot_APIC_clock+0x11f/0x121)
> time.c: Lost 2 timer tick(s)! rip __do_softirq+0x4a/0xc4)
>=20

>=20
> Also, for the clocksource:
> [ root @ barbossa : ~ ] # cat
> /sys/devices/system/clocksource/clocksource0/available_clocksource
> jiffies
>=20
> [ root @ barbossa : ~ ] # cat
> /sys/devices/system/clocksource/clocksource0/current_clocksource
> jiffies
>=20
>=20
> Thanks for your help.
>=20
> Cheers,
> Michael
>=20

--=20
S=E9rgio M.B.

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