> From: Jeffrey Janner [mailto:jeffrey.jan...@polydyne.com] > Subject: [OT] Jconsole Perform GC?
> Anyone know what exactly what kind of GC the "Perform GC" > button in Jconsole does? The same one you get by calling System.gc() - a full GC. > The initial work was mostly in the Eden space and Survivor > spaces for most of the day, then suddenly, a big chunk > (nearly 4GB) ended up in the Old Gen space and pretty much > stayed there all night. Anything too big for the Eden space will be allocated directly in tenured. > Looking at the other individual graphs showed that there had > been several instances of GC performed by the JVM during that > time, but it took my manual instance to clear the Old Gen. Those were minor collections, cleaning out only the Eden space. > Is this just "normal" JVM GC processing? Yes, that's completely normal. The JVM will not do a major (full) GC unless it has to - or is forced by the API invocation. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
