Hi Viral, the following are all needed for CMS: -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:CMSInitiatingOccupancyFraction=70 -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:+CMSClassUnloadingEnabled -XX:CMSMaxAbortablePrecleanTime=300 -XX:+CMSScavengeBeforeRemark
and if your JDK version is greater than 1.6.23, then add : -XX:+UseCompressedOops -XX:SoftRefLRUPolicyMSPerMB=0 and you'd better add GC log -verbose:gc -XX:+PrintGCDateStamps -XX:+PrintGCDetails -Xloggc:$HBASE_LOG_DIR/gc.log if your JDK version is greater than 1.6.23, then add : -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=9 -XX:GCLogFileSize=20m Hope that helpful. On Fri, Jun 28, 2013 at 5:06 AM, Viral Bajaria <viral.baja...@gmail.com>wrote: > Thanks Azuryy. Look forward to it. > > Does DEFERRED_LOG_FLUSH impact the number of WAL files that will be created > ? Tried looking around but could not find the details. > > On Thu, Jun 27, 2013 at 7:53 AM, Azuryy Yu <azury...@gmail.com> wrote: > > > your JVM options arenot enough. I will give you some detail when I go > back > > office tomorrow. > > > > --Send from my Sony mobile. > > >
