On 20/09/18 17:25, Suvendu Sekhar Mondal wrote: > Hello Everyone, > > Recently I am investigating a Metaspace leak issue. I dumped Metaspace > content over time using jcmd. While comparing them I can see that > there are 15,000 classes which are taking 120MB in that area! For all > of them InstCount(number of object instances of the Java class) is > zero. That tells me there is *no object* for those 15K classes in > heap. I can see that too in heap. No objects found for those classes. > > Then why are they still live in the Metaspace and not getting cleared > by Full GC? Definitely they have some reference(s) from somewhere. All > I can see that they were loaded by 'class loader 0x0000000021005760a > 'org/apache/catalina/loader/WebappClassLoader'. Is this another form > of classloader leak or something else? Any idea?
Use a profiler, trace the GC roots and figure out why the references are being retained. Mark --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
