The max heap (set with the -Xmx parameter) is shared between all generations, with the typical Sun/Oracle JVM that is eden, survivor, tenured and permanent generations. The JVM usually does a pretty good job at adjusting the individual sizes according to how much garbage your app produces.
I think 2097M out of 3000M is quite reasonable for the tenured generation. You may need to give it more memory. Is it conceivable that your app has a resource leak? If so you may be able to get in shape for a while by restarting it. The thread count warnings may indicate that a lot of your memory is going to call stacks for the threads. If your app was faster you would see fewer threads and hence less memory used. If you really want to get into tuning the memory/GC settings there is http://www.oracle.com/technetwork/java/javase/gc-tuning-6-140523.html to guide you, but I don't recommend that. Knut Forkalsrud On Tue, Oct 30, 2012 at 10:14 AM, Keith Fetterman <kfetter...@go2marine.com>wrote: > Hi Everyone, > > I could use a little help troubleshooting some messages in my > jvm-default.log. I am seeing a lot of the following messages in our > Resin logs. We are currently running Resin 4.0.23 Pro. > > > INFO com.caucho.env.health.HealthService > MemoryTenuredHealthCheck[WARNING:0.48% free (10.127M free, 2097.152M max, > 2087.025M used)] > > I did a bit of research this morning about adjusting tenured memory > limits, but I didn't find anything specific to adjusting the value. Does > anyone know what property I need to adjust? I currently have the > following Java settings in my resin.xml file: > > > <jvm-arg>-J-server</jvm-arg> > > <jvm-arg>-J-d64</jvm-arg> > > <jvm-arg>-Xms3000M</jvm-arg> > > <jvm-arg>-Xmx3000M</jvm-arg> > > <jvm-arg>-XX:MaxPermSize=250M</jvm-arg> > > I could increase the -Xmx property, but I am wondering if there is a > better property to tweak. > > I am also seeing the following warning messages: > > > WARNING com.caucho.health.analysis.AnomalyAnalyzer AnomalyAnalyzer > JVM|Thread|JVM Blocked Count WARNING > > WARNING com.caucho.health.analysis.AnomalyAnalyzer AnomalyAnalyzer > JVM|Thread|JVM Runnable Count WARNING > > Does anyone have some advice on how to resolve these warnings? I read > the Resin documentation, but I didn't find something specific. > > Thanks for your help > > Keith > > -- > ----------------------------------------------------------------- > Keith Fetterman Direct: 206-319-9434 > Mariner Supply, Inc. 206-780-5670 > http://www.go2marine.com kfetter...@go2marine.com > http://www.go2hydraulics.com > http://www.shoprvparts.com > > > _______________________________________________ > resin-interest mailing list > email@example.com > http://maillist.caucho.com/mailman/listinfo/resin-interest >
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