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Date:      Tue, 12 Aug 2008 03:28:56 -0700
From:      Jeremy Chadwick <koitsu@FreeBSD.org>
To:        Borja Marcos <BORJAMAR@SARENET.ES>
Cc:        freebsd-stable@freebsd.org, Ivan Voras <ivoras@freebsd.org>
Subject:   Re: umtxn and Apache 2.2
Message-ID:  <20080812102856.GA6735@eos.sc1.parodius.com>
In-Reply-To: <0296197A-28ED-4DAA-A31F-C28471E864FB@SARENET.ES>
References:  <43EC06E9-76B3-4AA1-BC5E-4E1BD64AFC2D@SARENET.ES> <g7qdh3$ml4$1@ger.gmane.org> <0296197A-28ED-4DAA-A31F-C28471E864FB@SARENET.ES>

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On Tue, Aug 12, 2008 at 12:17:05PM +0200, Borja Marcos wrote:
>
> On Aug 12, 2008, at 12:12 AM, Ivan Voras wrote:
>
>> Borja Marcos wrote:
>>> Hello,
>>> I'm running a server with FreeBSD 7-STABLE as of August 8, Apache  
>>> 2.2 with mpm/worker and threads support, and PHP 5.2.6.
>>> Everything works like a charm, but I see that Apache is leaking  
>>> processes that get stuck in umtxn state.
>>
>> I run Apache 2.2 with worker MPM but without mod_php (I use PHP as  
>> FastCGI) on many servers and I don't have such problems. Maybe it's  
>> PHP's fault? (I agree you need a trace with debugging symbols).
>
> May me my fault. It's a system that I didn't use to administrate. I  
> upgraded it from 6.2-REL to 7-STABLE in place, and recompiled packages. 
> But there was a lot of litter. I'm just wondering if that could be a 
> problem.
>
> Just in case I've done a thorough cleanup, recompiled needed ports, and 
> included debugging support in Apache. Let's see what happens.
>
> And please accept my apologies if this  has been a silly false alarm :)

Please be sure to report back with the outcome (in a few days, or
whenever suits you) -- I've seen a report of similar oddities (threads
locking up) on the suPHP mailing list, when using Apache with the worker
MPM.  No one stated what state the process is in (re: umtxn), so I'm not
sure if it's the same issue as what you've seen.

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |




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