It exists other tools than jhat to browse a heap dump, which stream the heap dump instead of loading it full in memory like jhat do.
Kind regards, Benoit. 2010/4/3 Weijun Li <weiju...@gmail.com>: > I'm running a test to write 30 million columns (700bytes each) to Cassandra: > the process ran smoothly for about 20mil then the heap usage suddenly jumped > from 2GB to 3GB which is the up limit of JVM, --from this point Cassandra > will freeze for long time (terrible latency, no response to nodetool that I > have to stop the import client ) before it comes back to normal . It's a > single node cluster with JVM maximum heap size of 3GB. So what could cause > this spike? What kind of tool can I use to find out what are the objects > that are filling the additional 1GB heap? I did a heap dump but could get > jhat to work to browse the dumped file. > > Thanks, > > -Weijun >
