linux-kernel - Re: 2.6.19-rc4-mm1: noidlehz problems

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Message-ID: <20061101125506.GA2133@elf.ucw.cz>
Date:	Wed, 1 Nov 2006 13:55:06 +0100
From:	Pavel Machek <pavel@....cz>
To:	kernel list <linux-kernel@...r.kernel.org>, mingo@...hat.com
Cc:	Andrew Morton <akpm@...l.org>
Subject: Re: 2.6.19-rc4-mm1: noidlehz problems

Hi!


> First, it would be nice if we had someone listed as a maintainer of
> noidlehz stuff...
> 
> Then... I'm getting strange messages from noidlehz each time I
> unplug/replug AC power (perhaps due to interrupt latency?).
> 
> Disabling NO_HZ and high resolution timers due to timer broadcasting
> (C3 stops local apic)
> Adding 987988k swap on /dev/sda1.  Priority:-1 extents:1
> across:987988k
> Disabling NO_HZ and high resolution timers due to timer broadcasting
> (C3 stops local apic)
> EXT2-fs warning (device sda2): ext2_fill_super: mounting ext3
> filesystem as ext2
...
> Disabling NO_HZ and high resolution timers due to timer broadcasting
> (C3 stops local apic)
> Disabling NO_HZ and high resolution timers due to timer broadcasting
> (C3 stops local apic)
> 
> ...I'd expect one such message, not many of them. Something seems
> seriously wrong there...
> 
> Plus, suspend to RAM and disk is broken in -rc4-mm1. Suspend to RAM
> dies with screaming speaker, suspend to disk returns but machine is
> mostly toast (and screaming, looks like timer problem, beeps never
> end). I'll disable NO_HZ and try again.

Disabling NO_HZ did not help, but I disabled high resolution timers,
and s2ram now works. s2disk also started working.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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