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Date:      Mon, 23 Mar 2015 18:50:19 +0000
From:      Matthew Seaman <m.seaman@infracaninophile.co.uk>
To:        freebsd-questions@freebsd.org
Subject:   Re: Un-kill-able process hang at umtxpi state with 100% cpu
Message-ID:  <5510606B.2010400@infracaninophile.co.uk>
In-Reply-To: <1427134474819-5999426.post@n5.nabble.com>
References:  <1427109169038-5999345.post@n5.nabble.com> <1427134474819-5999426.post@n5.nabble.com>

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[-- Attachment #1 --]
On 2015/03/23 18:14, BBlister wrote:
> Following an advice from a user of this list, 
> I did a 
> 
> kill -STOP 35662 
> 
> in order to minimize the CPU consumption 
> 
> and as soon as I hit enter the process disappeared (died). I had already
> killed its parent, but
> it was not possible to kill this process. By sending the STOP signal it was
> killed.

Are you sure?  STOP usually does exactly what it says on the tin.  It's
like Ctrl-Z in the shell.  You can in theory use 'kill -CONT pid' to
wake the process up again.

If the process died from a SIGSTOP it must be because there were other
pending signals that could somehow be delivered once the process was
stopped, but that strikes me as pretty odd.

	Cheers,

	Matthew



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