httpd-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Alec Matusis" <matu...@yahoo.com>
Subject RE: 2.0.54 unstable, requests time-out, NO warnings in logs
Date Tue, 02 Oct 2007 21:31:20 GMT
> Looks like an overloaded server to me. It is strange that there are so
> many processes in 'R' state. This looks to me as some clients are
> playing
> games with your server by connecting it but not sending a request.

The thing is, as soon as apache is stop/started, the R's disappear- if it
was an attack, I would not expect it to stop as soon as we restart apache. 

> -----Original Message-----
> From: Ruediger Pluem [mailto:rpluem@apache.org]
> Sent: Tuesday, October 02, 2007 1:46 AM
> To: dev@httpd.apache.org
> Subject: Re: 2.0.54 unstable, requests time-out, NO warnings in logs
> 
> 
> 
> On 10/02/2007 01:04 AM, Alec Matusis wrote:
> >> Have you checked without the MaxMemFree setting?
> >> Why do you use MaxMemFree with such a small value at all?
> >
> > I finally removed MaxMemFree altogether, and it crashed again.
> Nothing in
> > the apache error logs, but this is how /server-status looks like
> during the
> > crash:
> >
> > 300 requests currently being processed, 0 idle workers
> > WCRRRRRRCRRRRRRRRCCRRRRRRRRRRRRRRRCCRWWRRRCRWRRCRRCRWRRWRRRRRRRC
> > RRCRRRRCRCRRWRRRRWWCRRRWRRRWRCRRRCRRRRRRRRRCRRCRRRCCCRRCRRRRCCWR
> > RCRRRRRRRRRRRRRRRRWWRRRWRWRWCCCWWWRCRRRRRCRCCWRRWRCRCRWRRRRCRRRR
> > RRRRWRRRWRRRCRRCRRCRRRCRRRRRRRRRRRRRRRRCCCRWRRRRRRRRRRRRCRRRCRRR
> > RRCRRRRRRRRCRWCRCRRRRRRRWWCWRRCWRRRCRRCRRRCR
> 
> Looks like an overloaded server to me. It is strange that there are so
> many processes in 'R' state. This looks to me as some clients are
> playing
> games with your server by connecting it but not sending a request.
> 
> 
> >
> > Immediately after I restarted the apache after the crash, I did get
> >
> > [Mon Oct 01 15:20:49 2007] [notice] mod_python: Creating 32 session
> mutexes
> > based on 300 max processes and 0 max threads.
> > [Mon Oct 01 15:20:49 2007] [notice] Apache/2.0.54 (Unix)
> mod_python/3.1.4
> > Python/2.4.1 configured -- resuming normal operations
> > ****[Mon Oct 01 15:21:25 2007] [error] server reached MaxClients
> setting,
> > consider raising the MaxClients setting***
> >
> > but it's strange that this message was not written before or during
> the
> > crash, even though /server-status shows no available free child
> processes.
> 
> It is only written once during the livetime of the server. So in your
> case
> above: As it appeared immediately after the start of the server it will
> never appear again until you restart the server.
> 
> Regards
> 
> RĂ¼diger


Mime
View raw message