Sorry, set it to 5 billion or something like that so that it will never ever run.
I'm working on a fix. Bill > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Andrew May > Sent: Thursday, July 17, 2003 12:01 PM > To: [EMAIL PROTECTED] > Subject: Re: [JBoss-user] AbstractInstanceCache deadlock > > > Thanks, > > We've changed the config for stateful session beans, > unfortunately it doesn't seem to like > that: > > Caused by: org.jboss.deployment.DeploymentException: Overager > period can't be <= 0 > at > org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy.importXml(LR > UEnterpriseContextCachePolicy.java:199) > at > org.jboss.ejb.plugins.LRUStatefulContextCachePolicy.importXml(LRUS > tatefulContextCachePolicy.java:77) > at > org.jboss.ejb.plugins.AbstractInstanceCache.importXml(AbstractInst > anceCache.java:266) > > So I've set it to 6000, in the hope that running less frequently > is less likely to cause > deadlocks. > > Andrew > > Bill Burke wrote: > > > Ok, I found the deadlock scenario....Trying to figure out the > fix. For now, > > set the <overager-period> to 0 to turn off the overager thread. > > > > Bill > > > > > >>-----Original Message----- > >>From: [EMAIL PROTECTED] > >>[mailto:[EMAIL PROTECTED] Behalf Of Andrew May > >>Sent: Thursday, July 17, 2003 9:32 AM > >>To: [EMAIL PROTECTED] > >>Subject: [JBoss-user] AbstractInstanceCache deadlock > >> > >> > >>Hi, > >> > >>We've just release a production service using JBoss 3.2.1 on > >>Solaris with Sun's 1.4.2 JVM, > >>and we're seeing a deadlock on the AbstractInstanceCache for one > >>of our stateful session > >>beans that's used heavily. > >> > >>Over a period of time more and more threads become locked trying > >>to insert or get from the > >>cache, until all the Jetty threads (currently set to a maximum of > >>255 on the AJP13 > >>listener we're using) are locked and the entire site becomes > >>unresponsive. This seems to > >>be happening about once an hour. > >> > >>I've attached a portion of the thread dump from the server when > >>it has become unresponsive. > >>It shows one thread running > >>org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy$OveragerTask > >>.run with a lock > >>passivating from the AbstractInstanceCache and then a lock and wait on a > >>org.jboss.ejb.plugins.lock.QueuedPessimisticEJBLock. Another > >>thread is trying to get from > >>the cache, and one is inserting into the cache. In the entire > >>thread dump there are more > >>inserts than gets. > >> > >>Because we are using mod_jk and the AJP13 listener we are able to > >>use the HTTP listener to > >>view the jmx-console after the site has become unresponsive, but > >>I'm not sure what to look > >>for. > >> > >>We're going to download the source and start looking at the cache > >>implementation, but we > >>would appreciate any help or advice, as we need to fix this urgently. > >> > >>Regards, > >> > >>Andrew > >> > > > > > > > > > > ------------------------------------------------------- > > This SF.net email is sponsored by: VM Ware > > With VMware you can run multiple operating systems on a single machine. > > WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the > > same time. Free trial click here: http://www.vmware.com/wl/offer/345/0 > > _______________________________________________ > > JBoss-user mailing list > > [EMAIL PROTECTED] > > https://lists.sourceforge.net/lists/listinfo/jboss-user > > > > ------------------------------------------------------- > This SF.net email is sponsored by: VM Ware > With VMware you can run multiple operating systems on a single machine. > WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the > same time. Free trial click here: http://www.vmware.com/wl/offer/345/0 > _______________________________________________ > JBoss-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/jboss-user ------------------------------------------------------- This SF.net email is sponsored by: VM Ware With VMware you can run multiple operating systems on a single machine. WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the same time. Free trial click here: http://www.vmware.com/wl/offer/345/0 _______________________________________________ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
