From: Nix <nix@esperi.org.uk>
To: Jeff Dike <jdike@addtoit.com>
Cc: user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] actually useful backtrace from a CPU-chewing hang
Date: Wed, 14 May 2008 21:12:12 +0100 [thread overview]
Message-ID: <87r6c4y7ab.fsf@hades.wkstn.nix> (raw)
In-Reply-To: <20080514193912.GA11531@c2.user-mode-linux.org> (Jeff Dike's message of "Wed, 14 May 2008 15:39:12 -0400")
On 14 May 2008, Jeff Dike verbalised:
> I finally reproduced this using 2.6.25.1 (2.6.25-mm1 was no good) with
> your config.
YAY! (I wonder why this was so .config-dependent? You'd think it would
trigger on anything, but I couldn't even make it happen on all my
hosts...)
> The patch below fixes it for me. You'll notice a certain similarity
> between this and a previous patch that you posted. It's not clear to
> me why yours didn't work.
As far as I can tell it's identical in behaviour in the !NO_HZ
case.
Annoyingly, now I've upgraded the host to 2.6.25 (hence sans skas3),
timings or something have changed such that I now can't make the freeze
happen at all. I'll reboot the host into 2.6.24.x shortly to get skas
back and try again.
Oh, and, it's pedantic of me, I know, but what does this do if time goes
backwards in the NO_HZ case? (Or is handling that a 2.6.26 thing?)
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next prev parent reply other threads:[~2008-05-14 20:12 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-25 19:59 [uml-devel] actually useful backtrace from a CPU-chewing hang Nix
2008-04-25 22:06 ` Nix
2008-04-26 18:31 ` Nix
2008-04-27 14:02 ` Nix
2008-04-28 16:44 ` Jeff Dike
2008-04-30 21:49 ` Nix
2008-05-01 15:13 ` Jeff Dike
2008-05-01 23:34 ` Nix
2008-05-02 16:30 ` Jeff Dike
2008-05-02 18:55 ` Nix
2008-05-02 19:57 ` Jeff Dike
2008-05-02 23:21 ` Nix
2008-05-03 0:56 ` Jeff Dike
2008-05-03 10:08 ` Nix
2008-05-09 15:16 ` Jeff Dike
2008-05-09 17:13 ` vincent-perrier
2008-05-09 20:32 ` Nix
2008-05-14 17:23 ` Jeff Dike
2008-05-14 18:03 ` vincent-perrier
2008-05-14 18:18 ` vincent-perrier
2008-05-14 18:29 ` vincent-perrier
2008-05-14 19:39 ` Jeff Dike
2008-05-14 20:12 ` Nix [this message]
2008-05-14 20:31 ` Nix
2008-05-14 20:43 ` Jeff Dike
2008-05-14 22:02 ` Nix
2008-05-19 18:54 ` [uml-devel] plug_and_play_clownix_network vincent-perrier
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