Sorry for belated answer - travels. Yes it is. Either via jvisualvm or Java Mission Control and if you want it scripted you might want to look at jmap from /bin dir in JDK. If you're on Windows debugging tools might be needed for that last part (see man for jmap).
pozdrawiam, LAFK 2015-05-19 5:18 GMT+02:00 Zheng Lin Edwin Yeo <edwinye...@gmail.com>: > Thanks for the info. > > I was afraid that there's a memory leak, although so far the problem didn't > occur after I enlarge the PermGen size. > > Is there any way to check the current PermGen size usage and prevent it > before the system crash? I've read some articles and they recommend that I > can include this phase during the startup of the server > '-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/tmp/heapDumps'. I've > included this but this will only output the dump when the error occurs. > > Regards, > Edwin > > > On 18 May 2015 at 16:54, Tomasz Borek <tomasz.bo...@gmail.com> wrote: > > > The error happens either when you have too large codebase or when you are > > String-intensive in your application (Solr including) or when your > previous > > process did not terminate well. > > > > Can't say for certain what Solr usage scenarios are string intensive > > without deep look at it's code. Usually enlarging PermSize helps with > this > > problem, though if there's a leak, it will only increase the time app > > operates prior to crash. > > > > This is purely from JVM side of things. You may want to read up more on > > PermGen to know various problem scenarios. > > > > pozdrawiam, > > LAFK > > > > 2015-05-18 4:07 GMT+02:00 Zheng Lin Edwin Yeo <edwinye...@gmail.com>: > > > > > Hi, > > > > > > I've recently upgrade my system to 16GB RAM. While there's no more > > > OutofMemory due to the physically memory being full, I get this > > > "java.lang.OutOfMemoryError: PermGen space". This doesn't happen > > previously > > > as I think the physical memory run out first. > > > > > > This occurs after about 2 days of running the Solr Server continuously, > > but > > > the amout of physically memory used is only between 50% to 60%. I have > > read > > > that we can set -XXMaxPermSize=256M when starting up the server. Will > > this > > > help and prevent such error to occur? > > > > > > I'm using Solr-5.1.0 with two shards and a replica for each shard, > > together > > > with external ZooKeeper 3.4.6 > > > > > > > > > Regards, > > > Edwin > > > > > >
