[ http://jira.jboss.com/jira/browse/JBAS-1255?page=comments#action_12314977 ] Attila Ulbert commented on JBAS-1255: -------------------------------------
As a result of our recent experiences we realized that our simple example application leaks in a given server directory, and does not leak in a different server directory (e.g. the default server directory of JBoss 401). I've uploaded our "test" server directory to the Sourceforge site. When we deployed and run our test application, it seemed to leak there, however if we used the "default" server, the memory consumption was stable. Strange... So please deploy your test application into our "test" domain. We simply cannot explain how can our "test" server directory turn a stable application into a memory gross feeder... > memory leak after 7 hours > ------------------------- > > Key: JBAS-1255 > URL: http://jira.jboss.com/jira/browse/JBAS-1255 > Project: JBoss Application Server > Type: Bug > Components: CMP service > Versions: JBossAS-4.0.0 Final > Reporter: SourceForge User > Assignee: Alexey Loubyansky > > > SourceForge Submitter: atomrom . > Hi, > I have experienced strange memory leaks under JBoss > 4.0.0 after 7 hours, and under JBoss 4.0.1RC2 after 3.5 > hours running my application. (In the first 7 hours my > application consumes 100M of memory under 4.0.0, > however after 7 hours the memory consumption raises > lineraly). I used YourKit to detect the memory leak and > I found that the memory is chiefly occupied by HashMap > and entity bean proxies. > Unfortunately I cannot provide source code, but I can > give a short description of the component architecture > and functioning: > (a) objects are inserted into a messaging topic > (b) an MDB receives the objects and: > (b.i) dispaches them to a resource adapter (the RA > sends the object over the network) > (b.ii) creates a database entry using the String(s) > returned by the RA (a tuple looks like this: [String: > id, Date: date, String: st]; I'm using a CMP entity bean) > (c) a timer periodically removes the overaged database > entries (see date). ejbTimeout is implemented by a > stateless session bean, database entries are removed by > the corresponding CMP entity bean > (d) whenever the RA receives an object over the > network, it dispatches it to a stateless session bean, > which is registered as an endpoint at the RA > (e) the stateless session bean > (e.i) updates the database entry (using the ), or > more precisely, its "st" field > (e.ii) inserts a new database entry > (e.iii) if the "st" field statisfies certain > conditions, removes both the inserted and updated entries > Additional infos: > * OS: RedHat AS (running on various hardware, e.g. > simple PC and a 4 processor Xeon server) > * JDK: jdk1.4.5 > * I see lot of log messages regarding rolled back > transactions (because of timeouts); these exceptions > are thrown in the CMP entity bean in that method, which > removes the overaged entries. After a findByDate I > iterate over the resulting collection and when I want > to access "id", an exception is thrown. Not always, but > strangely often. > * the memory leak emerges after 7 (or 3.5) hours > regardless the load, and configuration. The load > influences only the gradient of the lineraly increasing > (and therefore deadly) period. > Merry Christmas, > Mormota -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - If you want more information on JIRA, or have a bug to report see: http://www.atlassian.com/software/jira ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ JBoss-Development mailing list JBoss-Development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-development
