httpd-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From David Cassidy <da...@twocats.co.uk>
Subject Re: [users@httpd] Server hanging with requests in "W" state
Date Tue, 26 Feb 2008 13:49:41 GMT
Whats your timeout and keepalivetimeout settings set to ?

If you have them more than 15 secs ? then you'll DOS yourself 

IE will hold open connections to the server for as long as it can...

On Tue, 2008-02-26 at 09:29 +0100, pthyseba@intec.ugent.be wrote:
> Hello,
> 
> > On 25/02/2008, pthyseba@intec.ugent.be <pthyseba@intec.ugent.be> wrote:
> >>  We're having some strange problems with our webservers (https), which
> >> are
> >>  Apache 2.0.52 on RHEL4 and 2.0.46 on RHEL 3.
> >
> > This could be due to MSIE's duff SSL implementation. Do you have
> > something like this in your SSL config?
> >
> > BrowserMatch ".*MSIE.*" \
> >          nokeepalive ssl-unclean-shutdown \
> >          downgrade-1.0 force-response-1.0
> >
> >
> 
> 
> We do have this kind of line in our SSL configuration. However, we have
> also seen this problem (512 W's with increasingly high "SS" values in
> server-status, until even server-status can no longer be requested) on our
> non-ssl web servers, albeit a lot less frequently (possibly because of
> lower load triggering our scenario less frequently).
> 
> I'm wondering what the technical (apache, sockets, OS,...) reason is for
> the absence of some "Apache kill switch" which would terminate (that is,
> free the apache slot and make it available to another client) a connection
> with an "SS" value greater than some threshold - or is this supposed to be
> solved by any of the apache Timeout settings?
> 
> If not, I'll have to dig further into the plugins we're running.
> 
> Is there a good overview available which explains the relationship between
> Apache timeout settings and e.g. worker.properties (mod_jk) timeout
> parameters (e.g. parameter1 >= parameter2) ? The documentation of each
> package seems to only explain its own configuration directives, but I'm
> thinking our problems may be related to some not-so-good combination of
> timeout settings (at the moment they all have values > 0 and < infinite
> though).
> 
> Thx,
> 
> Pieter
> 
> 
> > noodl
> >
> > ---------------------------------------------------------------------
> > The official User-To-User support forum of the Apache HTTP Server Project.
> > See <URL:http://httpd.apache.org/userslist.html> for more info.
> > To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> >    "   from the digest: users-digest-unsubscribe@httpd.apache.org
> > For additional commands, e-mail: users-help@httpd.apache.org
> >
> 
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See <URL:http://httpd.apache.org/userslist.html> for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>    "   from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
> 


---------------------------------------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
   "   from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org


Mime
View raw message