Ronan’s Blog


Random thoughts of an Irish Software Architect in the GIS Industry.

Java Performance Tuning Startup Parameters

Posted in Development, Java, Web by Ro on the September 11th, 2007

I’ve come across these startup parameters which really seem to speed up the performance of our servers. They only work in the latest versions (1.4.2_15 & 1.5.0_12). But they really make a noticeable difference.
-XX:MaxTenuringThreshold=8 -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:-CMSParallelRemarkEnabled -XX:CMSInitiatingOccupancyFraction=40 -XX:+UseCMSInitiatingOccupancyOnly

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