From: Lucio De Re <lucio@proxima.alt.za>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] lock diagnostics on Fossil server
Date: Tue, 26 Oct 2010 18:27:22 +0200 [thread overview]
Message-ID: <20101026162722.GA4059@fangle.proxima.alt.za> (raw)
In-Reply-To: <AANLkTi=7imoeJdo34T3wq5EYkihYwH5LnL36FJQ63jPK@mail.gmail.com>
On Tue, Oct 26, 2010 at 07:28:57AM -0700, Russ Cox wrote:
>
> Like Lucio and Cinap, I am skeptical that this is the fix.
>
> It's a real bug and a correct fix, as we've discussed before,
> but if the kernel loses this race I believe it will crash dereferencing nil.
> Lucio showed a kernel that was very much still running.
>
And a very busy one, at that, because while I had stats(1) running,
it showed load at max. I may not remember correctly, but I think there
lots of context switches as well, but load was saturating.
I can re-create the problem if anybody wants me to help diagnose it.
++L
next prev parent reply other threads:[~2010-10-26 16:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-24 12:20 Lucio De Re
2010-10-25 13:20 ` erik quanstrom
2010-10-25 14:35 ` Lucio De Re
2010-10-26 2:01 ` cinap_lenrek
2010-10-26 12:44 ` erik quanstrom
2010-10-26 13:45 ` Lucio De Re
2010-10-26 14:31 ` erik quanstrom
2010-10-26 14:28 ` Russ Cox
2010-10-26 14:48 ` erik quanstrom
2010-10-26 16:27 ` Lucio De Re [this message]
2010-10-26 17:01 ` erik quanstrom
2010-10-27 3:03 ` lucio
2010-10-27 4:14 ` erik quanstrom
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