Hello everyone, We are using solr 4.4 version production with 4 shards. This is our memory settings. -d64 -server -Xms8192m -Xmx12288m -XX:MaxPermSize=256m \ -XX:NewRatio=1 -XX:SurvivorRatio=6 \ -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:CMSIncrementalDutyCycleMin=0 \ -XX:CMSIncrementalDutyCycle=10 -XX:+CMSIncrementalPacing \ -XX:+PrintTenuringDistribution -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC \ -XX:+CMSClassUnloadingEnabled -XX:+DisableExplicitGC \ -XX:+UseLargePages \ -XX:+UseParNewGC \ -XX:ConcGCThreads=10 \ -XX:ParallelGCThreads=10 \ -XX:MaxGCPauseMillis=30000 \ I notice in production that, the old generation becomes full and no amount of garbage collection will free up the memory This is similar to the issue discussed in this link. http://grokbase.com/t/lucene/solr-user/12bwydq5jr/permanently-full-old-generation Did anyone have this problem? Can you please point anything wrong with the GC configuration?
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