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Tomcat Java Options

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William Panting edited this page Sep 17, 2015 · 4 revisions

This is aimed at a production Tomcat running Fedora, GSearch and Solr.

  • All Versions
    • at least 1 gig minimal memory -Xms1000m
    • a use-case sensitive max memory, usually no more than half of available physical memory so as to not starve other applications -Xmx4000m
  • 1.7
    • PermGen -XX:MaxPermSize=512m -XX:+CMSClassUnloadingEnabled
  • 1.8
    • PermGen has been removed so no longer use PermGen effecting options.
  • Multiple processors
    • Single threaded GC can't keep up so use -XX:+UseParallelOldGC
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