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Date: Tue, 18 Oct 2005 07:34:33 +0200
From: Maxime Petazzoni <maxime.petazzoni@bulix.org>
To: dev@httpd.apache.org
Subject: Re: mod_mbox spinning processes on ajax
Message-ID: <20051018053432.GK17803@bulix.org>
Reply-To: maxime.petazzoni@bulix.org
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References: <4352AFEA.2090503@slive.ca> <20051016230859.GE16817@bulix.org>
 <4353B8FC.3090104@slive.ca>
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Hi,

* Joshua Slive <joshua@slive.ca> [2005-10-17 10:45:16]:

> Maxime Petazzoni wrote:
> >Salut,
> >
> >* Joshua Slive <joshua@slive.ca> [2005-10-16 15:54:18]:
> >
> >>There appear to be some httpd processes spinning on cpu on ajax. 
> >>Attaching with gdb and asking for a backtrace gives me something
> >>like this:
> >
> >[snip]
> >
> >Could you send us the URL that raised the problem ? We don't see
> >anything that could be wrong in the mbox_wrap_text code :(
> 
> This URL seems to give the problem:
> http://mail-archives.apache.org/mod_mbox/xmlgraphics-fop-commits/200012.mbox/%3c20001212191857.95050.qmail@locus.apache.org%3e
> 
> There are no spinning httpds on ajax at the moment -- they seem to
> come and go.  I suspect that they are not permanently spinning, but
> rather are dying whenever the client gives up on waiting.
> Connecting to the above URL gives me instant 100% CPU usage on the
> server that lasts until I hit "stop" on the browser.  I get no
> content from the server.
> 
> I would debug further, but that would involve actually looking at the 
> code, which I have so far managed to avoid ;-)

This email is 457 kbytes long, maybe it just take some time to iterate
through 450k+ characters. Maybe we could find a better algorithm ?

I have no clue.

- Sam

-- 
Maxime Petazzoni (http://www.bulix.org)
 -- gone crazy, back soon. leave message.

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