The following should be sufficient java -agentlib:hprof=cpu=samples,depth=100,interval=20,lineno=y,thread=y,file=kafka.hprof <classname>
You would need to start the Kafka server with the settings above for sometime until you observe the problem. On Tue, Dec 9, 2014 at 3:47 AM, Mathias Söderberg < mathias.soederb...@gmail.com> wrote: > Hi Neha, > > Yeah sure. I'm not familiar with hprof, so any particular options I should > include or just run with defaults? > > Best regards, > Mathias > > On Mon Dec 08 2014 at 7:41:32 PM Neha Narkhede <n...@confluent.io> wrote: > > > Thanks for reporting the issue. Would you mind running hprof and sending > > the output? > > > > On Mon, Dec 8, 2014 at 1:25 AM, Mathias Söderberg < > > mathias.soederb...@gmail.com> wrote: > > > > > Good day, > > > > > > I upgraded a Kafka cluster from v0.8.1.1 to v0.8.2-beta and noticed > that > > > the CPU usage on the broker machines went up by roughly 40%, from ~60% > to > > > ~100% and am wondering if anyone else has experienced something > similar? > > > The load average also went up by 2x-3x. > > > > > > We're running on EC2 and the cluster currently consists of four > > m1.xlarge, > > > with roughly 1100 topics / 4000 partitions. Using Java 7 (1.7.0_65 to > be > > > exact) and Scala 2.9.2. Configurations can be found over here: > > > https://gist.github.com/mthssdrbrg/7df34a795e07eef10262. > > > > > > I'm assuming that this is not expected behaviour for 0.8.2-beta? > > > > > > Best regards, > > > Mathias > > > > > > > > > > > -- > > Thanks, > > Neha > > > -- Thanks, Neha
