From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: "Kevin B. Hendricks" <kevin.hendricks@sympatico.ca>
Cc: linuxppc-dev@lists.linuxppc.org, Paul Mackerras <paulus@samba.org>
Subject: Re: 2.4.19 on dual 1gig G4 funny slow down to kernel death experience
Date: 08 Feb 2003 14:27:54 +0100 [thread overview]
Message-ID: <1044710873.9705.106.camel@zion.wanadoo.fr> (raw)
In-Reply-To: <200302071629.28657.kevin.hendricks@sympatico.ca>
On Fri, 2003-02-07 at 22:29, Kevin B. Hendricks wrote:
> I just experienced the funny slow down until kernel death experience again
> that I reported many months ago on my dual 1gig G4 machine (smp with 768
> meg of memory)
>
> The dmesg log is full of a long stream of the following
>
> wait_on_irq, CPU 0:
> irq: -1 [0 0]
> bh: 0 [0 0]
Argh !
The global irq count should never _ever_ get to -1, that's very bad...
Either some weird codepath I haven't manage to figure out, or,
and that's what I'm afraid of, for some reasons, atomic operations
between CPUs failed, which should obviously never happen !
Remind me which rev of the CPU it is ?
Ben.
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2003-02-08 13:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-07 21:29 2.4.19 on dual 1gig G4 funny slow down to kernel death experience Kevin B. Hendricks
2003-02-08 13:27 ` Benjamin Herrenschmidt [this message]
2003-02-08 13:50 ` Kevin B. Hendricks
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