That the memory usage is bigger is logical as many more objects are created when using clustering compared to the non-clustered case. Furthermore, it is up to the JVM GC to decide when to reclaim that memory. Maybe the memory is used but could be reclaimed.
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Bill Burke > Sent: mercredi, 17. septembre 2003 17:20 > To: [EMAIL PROTECTED] > Subject: Re: [JBoss-user] Cluster "replica" absurd memory usage ?!? > > > Maybe because you are creating new sessions every request and those > sessions haven't timed out? I think the default HTTP session > timeout is > 15 minutes. > > Joao Clemente wrote: > > > Ok, trying to figure out what is going wrong with my tests, > I decided to do > > the following: > > > > I've runned my "100 user test" 10x. Test consists on about > 15-20 user > > actions (http requests) to the web/ejb application. Each > action from a > > specific user is separated by a minute, and users act in > equal intervals in > > that minute. This means the 1rst action happens in the 1rst > minute, 2nd > > action in the second minute. This is a rate of 100/60 > requests per minute = > > 1.6 requests per second. > > > > First I've runned the test with one machine, cluster > settings enabled. > > Memory usage before test started = 56Mb. > > Memory usage after test end about 80Mb, peak mem usage was 89Mb. > > > > Then I've connected a second machine to the cluster. I > restarted the 1rst > > machine and cleaned up external application state. > > Repeated the test directing requests to 1rst machine only. > "Replica" machine > > did not got requests, only stood there as a cluster replica. > > Memory usage before test started, around 56 Mb on each machine. > > At 20% of the test (2 runs): > > 1rst machine is using 99Mb, peak value is 105Mb. > > replica is using 225 Mb (!!!), and growing... > > At 30% of the test (3 runs): > > 1rst machine is using 103Mb, peak value is 105Mb. > > replica is using 285 Mb (!!!), and growing... > > > > > > Now, who can explain: > > 1 - why the 1rst machine memory usage increase? maybe > related with being > > part of the cluster... but no session info needs to be > replicated here as > > there is no requests being served by the replica machine... > > 2 - why is the replica memory usage getting larger and > larger each run of > > the test? It seems to grow about 60 Mb per run... > > > > > > -- > ================ > Bill Burke > Chief Architect > JBoss Group LLC. > ================ > > > > ------------------------------------------------------- > This sf.net email is sponsored by:ThinkGeek > Welcome to geek heaven. > http://thinkgeek.com/sf > _______________________________________________ > JBoss-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/jboss-user > > ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
