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The "PerformanceTuning" page has been changed by JonathanEllis. http://wiki.apache.org/cassandra/PerformanceTuning?action=diff&rev1=2&rev2=3 -------------------------------------------------- + Useful JVM options: + + -XX:+UseCompressedOops (for Sun JVM) + -Xcompressedrefs (for IBM) + + Compressed references (aka OOPs = ordinary object pointers) are not stable for Sun JVM versions before 6u19. + todo: describe how top, iostat -x, and JMX stats can help you see what is making things slow For starters, see "[[http://spyced.blogspot.com/2010/01/linux-performance-basics.html|Linux Performance Basics for Cassandra]]".
