Ok here is a bit more clarity after digging further. Timed out sessions do trigger a removal of the of the PageStore file. However if Tomcat is restarted there is no cleanup of the PageStore files on disk. In other words the Page Store will leak those cache files and never clean them up. >From these results, here are my questions now on all of this:
1) Shall we file a Jira for a enhancement to the DiskPageStore which would be a cleanup of any dangling cache files not part of the current DiskPageStore instance? 2) I am stlll trying to figure out how to limit the max number of directories and or files created by the DiskPageStore. I am less concerned about max sizes of sessions and page map and more concerned about the numer of directories/files - any ideas? thanks all for your quick responses and insight. Matej Knopp-2 wrote: > > I see. That would be a serious bug indeed. Can you please file a high > priority JIRA issue? We'll look at it as soon as possible. > > -Matej > > On Nov 8, 2007 6:35 PM, Chris Lintz <[EMAIL PROTECTED]> wrote: >> >> Guys I am on the same project so I can speak a bit more. The real issue >> is >> that on Redhat the default max directories is something like 32K. We ran >> out of file descriptors. Basically for every unique session there is a >> directory created for the second level cache. >> >> I think the real issue for us is that when a session expires the >> corresponding second level cache is not removed from disk. This seems >> like >> a serious bug to me. I have yet to see a second level cache be removed >> unless a forced session invalidate() occurs. >> >> Any ideas on how we can get these page store files to be removed when a >> session times out? I have looked at tuning the DiskPageStore, but the >> constuctor args dont appear as if they will help the issue: >> >> DiskPageStore(java.io.File fileStoreFolder, int maxSizePerPagemap, int >> maxSizePerSession, int fileChannelPoolCapacity) >> >> >> >> >> Johan Compagner wrote: >> > >> > But 50 is nothing (at least i think it is nothing) and linux should be >> > able >> > to handle that just fine >> > Can somebody peak how many handles we take on those session files? >> Maybe >> > we >> > leak somewhere >> > or do take more then we think. >> > >> > johan >> > >> > >> > >> > On Nov 8, 2007 2:04 AM, Matej Knopp <[EMAIL PROTECTED]> wrote: >> > >> >> There is a constructor parameter in DiskPageStore constructor (the >> >> last int parameter) that says how many handles DiskPageStore will keep >> >> opened. >> >> >> >> But the default number of file handles is 50. If this is causing your >> >> server file handle problems than you should consider changing the >> >> configuration. Are you sure there are no other file handles leaking? >> >> What are the files opened? >> >> >> >> -Matej >> >> >> >> On 11/8/07, Brandon Harper <[EMAIL PROTECTED]> wrote: >> >> > Hello All, >> >> > >> >> > Long story short, we're in the process of load testing an >> application >> >> > built against Wicket 1.3 snapshot. Unfortunately we've seen some >> >> > server issues with sessions/page maps in the file store during >> >> > testing, and I was wondering how I'd go about programatically >> changing >> >> > the default page map size in DiskPageStore just to see if changing >> >> > this value affects what we're seeing. >> >> > >> >> > FWIW, right now it looks like we're having issues under load with >> >> > Wicket creating too many open file handles on a fairly default >> install >> >> > of RHEL 5 which results in exceptions like this: >> >> > >> >> > java.lang.RuntimeException: java.io.FileNotFoundException: >> >> > /usr/local/jboss- >> >> >> 4.2.1.GA/server/website/work/jboss.web/localhost/_/Website-filestore/688F01368693E1A90ED61C8060A51A3E.n1/pm-null<http://4.2.1.ga/server/website/work/jboss.web/localhost/_/Website-filestore/688F01368693E1A90ED61C8060A51A3E.n1/pm-null> >> >> > (No such file or directory) >> >> > at >> >> > >> >> >> org.apache.wicket.protocol.http.pagestore.FileChannelPool.newFileChannel >> >> (FileChannelPool.java:104) >> >> > at >> >> > >> >> >> org.apache.wicket.protocol.http.pagestore.FileChannelPool.getFileChannel >> >> (FileChannelPool.java:171) >> >> > at >> >> > >> >> >> org.apache.wicket.protocol.http.pagestore.DiskPageStore$SessionEntry.savePage >> >> (DiskPageStore.java:224) >> >> > at >> >> > >> >> >> org.apache.wicket.protocol.http.pagestore.DiskPageStore.flushPagesToSaveList >> >> (DiskPageStore.java:788) >> >> > at >> >> > >> >> >> org.apache.wicket.protocol.http.pagestore.DiskPageStore$PageSavingThread.run >> >> (DiskPageStore.java:851) >> >> > at java.lang.Thread.run(Thread.java:619) >> >> > Caused by: java.io.FileNotFoundException: >> >> > /usr/local/jboss- >> >> >> 4.2.1.GA/server/me.dium.com/work/jboss.web/localhost/_/MediumWebsite-filestore/688F01368693E1A90ED61C8060A51A3E.n1/pm-null<http://4.2.1.ga/server/me.dium.com/work/jboss.web/localhost/_/MediumWebsite-filestore/688F01368693E1A90ED61C8060A51A3E.n1/pm-null> >> >> > (No such file or directory) >> >> > at java.io.RandomAccessFile.open(Native Method) >> >> > at >> java.io.RandomAccessFile.<init>(RandomAccessFile.java:212) >> >> > at >> >> > >> >> >> org.apache.wicket.protocol.http.pagestore.FileChannelPool.newFileChannel >> >> (FileChannelPool.java:99) >> >> > >> >> > Thanks, >> >> > >> >> > - Brandon >> >> > >> >> > -- >> >> > http://bharper.com >> >> > http://devnulled.com >> >> > >> >> > >> --------------------------------------------------------------------- >> >> > To unsubscribe, e-mail: [EMAIL PROTECTED] >> >> > For additional commands, e-mail: [EMAIL PROTECTED] >> >> > >> >> > >> >> >> >> --------------------------------------------------------------------- >> >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> >> For additional commands, e-mail: [EMAIL PROTECTED] >> >> >> >> >> > >> > >> >> -- >> View this message in context: >> http://www.nabble.com/How-To-Change-Page-Store-Size-in-DiskPageStore--tf4768072.html#a13651858 >> Sent from the Wicket - User mailing list archive at Nabble.com. >> >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > -- View this message in context: http://www.nabble.com/How-To-Change-Page-Store-Size-in-DiskPageStore--tf4768072.html#a13657341 Sent from the Wicket - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
