what jvm version? On Thu, Oct 11, 2012 at 2:04 PM, Daniel Woo <daniel.y....@gmail.com> wrote:
> Hi guys, > > I am running a mini cluster with 6 nodes, recently we see very frequent > ParNewGC on two nodes. It takes 200 - 800 ms on average, sometimes it takes > 5 seconds. You know, hte ParNewGC is stop-of-wolrd GC and our client throws > SocketTimeoutException every 3 minutes. > > I checked the load, it seems well balanced, and the two nodes are running > on the same hardware: 2 * 4 cores xeon with 16G RAM, we give cassandrda 4G > heap, including 800MB young generation. We did not see any swap usage > during the GC, any idea about this? > > Then I took a heap dump, it shows that 5 instances of JmxMBeanServer holds > 500MB memory and most of the referenced objects are JMX mbean related, it's > kind of wired to me and looks like a memory leak. > > -- > Thanks & Regards, > Daniel >
