RE: Error 503 ocurring when server under load

2010-10-13 Thread Jeffrey Janner
: Jeffrey Janner [mailto:jeffrey.jan...@polydyne.com] > Sent: Tuesday, October 12, 2010 2:23 PM > To: Tomcat Users List > Subject: RE: Error 503 ocurring when server under load > > I just occurred to me that I don't think anyone's asked if these are > net-mounted file systems. I&#

Re: Error 503 ocurring when server under load

2010-10-13 Thread Rob G
On 12 October 2010 19:47, Christopher Schultz wrote: > I would. > > I believe that is true. > > On the other hand, there is another case where you might have problems. > If you have, say, 512 worker threads in Apache httpd but you only have, > say, 200 request processor threads configured in Tomca

Re: Error 503 ocurring when server under load

2010-10-12 Thread Christopher Schultz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Jeffrey, On 10/12/2010 3:22 PM, Jeffrey Janner wrote: > I just occurred to me that I don't think anyone's asked if these are > net-mounted file systems. I've seen this timestamp-shifting before, > but only on net-mounted filesystems. Usually the sou

RE: Error 503 ocurring when server under load

2010-10-12 Thread Jeffrey Janner
--Original Message- > From: Christopher Schultz [mailto:ch...@christopherschultz.net] > Sent: Tuesday, October 12, 2010 1:47 PM > To: Tomcat Users List > Subject: Re: Error 503 ocurring when server under load > > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Rob, >

Re: Error 503 ocurring when server under load

2010-10-12 Thread Christopher Schultz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Rob, On 10/11/2010 4:40 PM, Rob G wrote: > So if I'm reading your email and the docs correctly. I should just > comment out the cachesize=10 from the workers.properties. I would. > And since for connection_pool_size (that replaced it) JK will > di

Re: Error 503 ocurring when server under load

2010-10-11 Thread Rob G
Christopher Schultz wrote> This directive has been deprecated since 1.2.16. > Cachesize defines the number of connections made to the AJP backend that > are maintained as a connection pool. It will limit the number of those > connection that each web server child process can make. > > Cachesize pro

Re: Error 503 ocurring when server under load

2010-10-09 Thread Pid
On 08/10/2010 10:08, André Warnier wrote: > Pid wrote: > ... >> >> Is this info in the original email? > Yes. > > (If so, I think my mailer isn't >> behaving well). >> > It seems also somewhat spastic. We've been receiving multiple copies of > what you send. > Or did you just have too much coff

Re: Error 503 ocurring when server under load

2010-10-08 Thread Christopher Schultz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Rob, On 10/7/2010 7:07 PM, Rob G wrote: > Christopher Schultz wrote >> I think you might want to compare the request processor counts you >> have for Tomcat versus mod_jk: the default maxThreads for a Tomcat >> is 200, while your MaxClients settings

Re: Error 503 ocurring when server under load

2010-10-08 Thread André Warnier
Pid wrote: ... Is this info in the original email? Yes. (If so, I think my mailer isn't behaving well). It seems also somewhat spastic. We've been receiving multiple copies of what you send. Or did you just have too much coffee lately ?

Re: Error 503 ocurring when server under load

2010-10-08 Thread Pid
On 08/10/2010 00:07, Rob G wrote: > Thanks to all for their replies to date. Much appreciated, I'll > respond to some of the points raised. Apologies if I'm asking basic > stuff but still getting my ahead around Tomcat and Apache integration. > > On 7 October 2010 18:31, André Warnier wrote: > >>

Re: Error 503 ocurring when server under load

2010-10-07 Thread Rob G
Thanks to all for their replies to date. Much appreciated, I'll respond to some of the points raised. Apologies if I'm asking basic stuff but still getting my ahead around Tomcat and Apache integration. On 7 October 2010 18:31, André Warnier wrote: > Your configuration looks very clean to me (no

Re: Error 503 ocurring when server under load

2010-10-07 Thread Pid
On 07/10/2010 17:59, Rob G wrote: > Hey all, > > Recently migrated a production site (mixture of Servlets and JSPs) > from Oracle Application Server to Apache/Tomcat. Since then we have > seen numerous HTTP Error 503 - Service unavailable errors at peak > times when site is under load. mod_jk.log

Re: Error 503 ocurring when server under load

2010-10-07 Thread Pid
On 07/10/2010 23:17, Christopher Schultz wrote: > Rob, > > On 10/7/2010 12:59 PM, Rob G wrote: >> Recently migrated a production site (mixture of Servlets and JSPs) >> from Oracle Application Server to Apache/Tomcat. Since then we have >> seen numerous HTTP Error 503 - Service unavailable errors a

Re: Error 503 ocurring when server under load

2010-10-07 Thread Christopher Schultz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Rob, On 10/7/2010 12:59 PM, Rob G wrote: > Recently migrated a production site (mixture of Servlets and JSPs) > from Oracle Application Server to Apache/Tomcat. Since then we have > seen numerous HTTP Error 503 - Service unavailable errors at peak > t

Re: Error 503 ocurring when server under load

2010-10-07 Thread Pid
On 07/10/2010 18:31, André Warnier wrote: > Rob G wrote: >> Hey all, >> >> Recently migrated a production site (mixture of Servlets and JSPs) >> from Oracle Application Server to Apache/Tomcat. Since then we have >> seen numerous HTTP Error 503 - Service unavailable errors at peak >> times when sit

Re: Error 503 ocurring when server under load

2010-10-07 Thread André Warnier
Rob G wrote: Hey all, Recently migrated a production site (mixture of Servlets and JSPs) from Oracle Application Server to Apache/Tomcat. Since then we have seen numerous HTTP Error 503 - Service unavailable errors at peak times when site is under load. mod_jk.log has the following error message