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Date:      Fri, 1 May 2009 09:49:45 -0400
From:      John Baldwin <jhb@freebsd.org>
To:        freebsd-stable@freebsd.org
Cc:        pluknet <pluknet@gmail.com>
Subject:   Re: lock up in 6.2 (procs massively stuck in Giant)
Message-ID:  <200905010949.45927.jhb@freebsd.org>
In-Reply-To: <a31046fc0904292336w17aca317hefd32dad5bc28007@mail.gmail.com>
References:  <a31046fc0904292336w17aca317hefd32dad5bc28007@mail.gmail.com>

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On Thursday 30 April 2009 2:36:34 am pluknet wrote:
> Hi folks.
> 
> Today I got a new locking issue.
> This is the first time I got it, and it's merely reproduced.
> 
> The box has lost both remote connection and local access.
> No SIGINFO output on the local console even.
> Jumping in ddb> shows the next:
> 
> 1) first, this is a 8-way web server. No processes on runqueue except one 
httpd
> (i.e. ps shows R in its state):

You need to find who owns Giant and what that thread is doing.  You can try 
using 'show lock Giant' as well as 'show lockchain 11568'.

-- 
John Baldwin



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