My web module is using automatic scaling with the default F1 server instance. Yesterday, I noticed a PermGen, Out of Memorry server exception occurred in production. This concerns me, because my users receive a blank screen when this error happens as the response to their web request, and it will cause a lot of confusion. Also, my app is in a pilot phase and there are just a couple of users and no load, so to receive a permgen, OutOfMemory server exception means more could be on the way as things ramp up.
Is there a way to increase the max PermGen memory allocation on a google app engine configuration? I've searched and not found anything about changing the setting on a production app engine server (only development server, which I've done successfully). If I change the server I'm using to something with more memory (e.g. F2 server instance), will that help? I'm assuming that even a higher memory server instance will still use the default max permGen setting, so I don't think so. Thanks for letting me know how to reduce the possiblity of receiving these OutOfMemory errors in production google app engine servers. Here's the stack trace of the error http://mydogscores.com/events/viewMyDogScoresCalendar java.lang.OutOfMemoryError: PermGen space at sun.misc.Unsafe.defineClass(Native Method) at sun.reflect.ClassDefiner.defineClass(ClassDefiner.java:63) at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:399) at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:396) at java.security.AccessController.doPrivileged(Native Method) at sun.reflect.MethodAccessorGenerator.generate(MethodAccessorGenerator.java:395) at sun.reflect.MethodAccessorGenerator.generateMethod(MethodAccessorGenerator.java:77) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:46) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2040) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1936) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1462) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:417) at java.util.HashMap.readObject(HashMap.java:1182) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2040) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1936) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1462) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2140) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2064) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1936) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1462) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:417) at com.google.apphosting.runtime.SessionManagerUtil.deserialize(SessionManagerUtil.java:56) at com.google.apphosting.runtime.MemcacheSessionStore.getSession(MemcacheSessionStore.java:38) at com.google.apphosting.runtime.jetty.SessionManager.loadSession(SessionManager.java:330) -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/f23764ee-e260-4321-bf9c-655a31d48e3d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
