Re: [Resin-interest] Problem when restoring sessions with file-store
Hi, Well, I was able to isolate the problem from the Resin handling of sessions, so it seems there's something wrong with my class and Java serialization. The class that is shown in the error is not causing the problem on its own, that's why my first standalone tests worked, but it is stored inside the session wrapped in another class and this combination is somehow failing. I cannot test it outside Resin, as this class is created from information from HttpSession etc. but as I said the problem seems to be in the standard (de)serialization of that set of classes. I tried serializing to XML and I ended up with an empty XML file, no errors reported, and serializing produces a file that looks fine but I'm unable to deserialize it. I'll have to go back to CVS history and apply changes one by one to see what change triggers the error... oh well. Thanks for your help, D. Scott Ferguson escribió: On Sep 4, 2007, at 10:27 AM, Daniel Lopez wrote: Hi, First thing I did was to clean up all the deployment directory, making sure the WEB-INF/sessions directory was removed, and session lifetime is 30min, so they shouldn't have survived all the weekend in any case :). I tried with Resin 3.1.2, just in case, and the result was the same. I downloaded Resin source and built the resin.jar from scratch adding some debugging info and I ended up at the readObject() call. So it seems for some weird reason that de-serialising that object inside a Session fails. However, I tested the serialise/de-serialise process using the same JVM on the class giving the errors and I had no problem doing it. Weird. Can you try changing the serialization-type to hessian: session-config serialization-type=hessian/ I'm not sure that it will change anything, but it might give a different error message that might help. Is the srun.db file in some kind of format one can easily grasp? Not really. It's a virtual filesystem/database-row structure. There are inodes and fragments, and indirect blocks and all sorts of nasty things. (It does support a JDBC API, though. So if the hessian change doesn't give enough information you could copy it to another directory, and launch a jdbc driver com.caucho.db.jdbc.ConnectionPoolDataSourceImpl with pathfoo/ path. I wouldn't recommend it, but it's possible.) -- Scott ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] Problem when restoring sessions with file-store - SOLVED
Hi, All right, I found the problem in an seemengly unrelated class but that was being serialized through references. The error message was quite misleading, but going step-by-step through the latest CVS commits I was able to isolate the class. There was a bug in that class in the custom serialization process to rebuild some transient fields, and that was affecting how other classes in the same stream were being serialised, hence the misleading error message. Thanks for the suggestions and my apologies for the false alarm :). Cheers! D. Daniel López escribió: Hi, Well, I was able to isolate the problem from the Resin handling of sessions, so it seems there's something wrong with my class and Java serialization. The class that is shown in the error is not causing the problem on its own, that's why my first standalone tests worked, but it is stored inside the session wrapped in another class and this combination is somehow failing. I cannot test it outside Resin, as this class is created from information from HttpSession etc. but as I said the problem seems to be in the standard (de)serialization of that set of classes. I tried serializing to XML and I ended up with an empty XML file, no errors reported, and serializing produces a file that looks fine but I'm unable to deserialize it. I'll have to go back to CVS history and apply changes one by one to see what change triggers the error... oh well. Thanks for your help, D. ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
[Resin-interest] help with thread limits = can't break 480
We're running Resin 3.0.20 on Apache 2 on FreeBSD 6, we seem to be hitting a java thread limit at 480 during peak times. Resin config: thread-pool thread-max800/thread-max spare-thread-min50/spare-thread-min /thread-pool server keepalive-max1600/keepalive-max keepalive-timeout120s/keepalive-timeout . Apache config: IfModule prefork.c StartServers 20 ServerLimit 2000 MinSpareServers 5 MaxSpareServers 10 MaxClients 800 MaxRequestsPerChild 0 /IfModule Any ideas why the java resin thread count cannot pass 480? Increasing JVM memory settings has had no effect. Thanks for your help in advance, Adam Luggage? GPS? Comic books? Check out fitting gifts for grads at Yahoo! Search http://search.yahoo.com/search?fr=oni_on_mailp=graduation+giftscs=bz ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
Re: [Resin-interest] help with thread limits = can't break 480
guessing: maybe a system limit, a la ulimit, or perhaps a kernel configuration parameter? On Sep 5, 2007, at 9:08 AM, Adam Allgaier wrote: We're running Resin 3.0.20 on Apache 2 on FreeBSD 6, we seem to be hitting a java thread limit at 480 during peak times. Resin config: thread-pool thread-max800/thread-max spare-thread-min50/spare-thread-min /thread-pool server keepalive-max1600/keepalive-max keepalive-timeout120s/keepalive-timeout . Apache config: IfModule prefork.c StartServers 20 ServerLimit 2000 MinSpareServers 5 MaxSpareServers 10 MaxClients 800 MaxRequestsPerChild 0 /IfModule Any ideas why the java resin thread count cannot pass 480? Increasing JVM memory settings has had no effect. Thanks for your help in advance, Adam __ __ Luggage? GPS? Comic books? Check out fitting gifts for grads at Yahoo! Search http://search.yahoo.com/search?fr=oni_on_mailp=graduation+giftscs=bz ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest -- joe ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
