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Date:      Wed, 02 Oct 2002 08:53:34 +0100 (BST)
From:      Duncan Barclay <dmlb@dmlb.org>
To:        Lars Eggert <larse@ISI.EDU>
Cc:        current <current@FreeBSD.ORG>
Subject:   Re: zombies from linux binaries
Message-ID:  <XFMail.20021002085334.dmlb@computer.my.domain>
In-Reply-To: <3D9A365A.7070702@isi.edu>

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On 01-Oct-2002 Lars Eggert wrote:
> Duncan Barclay wrote:
>> On 01-Oct-2002 Lars Eggert wrote:
>>>
>>>I've been running the guidescope web ad blocker 
>>>(http://www.guidescope.com/home/) as a Linux binary under FreeBSD for a 
>>>long time. The thing seems to fork a child for each web request it proxies.
>>>
>>>Under -current, it seems that the child processes become zombies, and 
>>>the proxy stops working once 1024 or so accumulate. The zombies don't go 
>>>away when parent process finishes, they stick around until reboot.
>> 
>> Is this http://www.freebsd.org/cgi/query-pr.cgi?pr=42457 related? It
>> is for stable but I belive that the same behaviour is present in -current
>> and it may manifest itself differently.
> 
> Don't know - I know the symptom, but haven't looked into finding the 
> cause; guidescope is closed source.

So is matlab that I tracked it down with. I used ktrace and
linux_kdump from ports to watch the thread creation and destruction. It
took an evening.
 
> Lars
> -- 
> Lars Eggert <larse@isi.edu>           USC Information Sciences Institute

-- 
________________________________________________________________________
Duncan Barclay  | God smiles upon the little children,
dmlb@dmlb.org   | the alcoholics, and the permanently stoned.
dmlb@freebsd.org| Steven King

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