Am 06.05.2016 um 14:11 schrieb Stefan Frei: > Tomcat 8.0.33 > Debain jessie > java 8 > > Hello > > i cannot find any resources how to set configure the setenv.sh for a > production environment. > > Does somebody have some tips? *How* to set them?
CATALINA_OPTS="-your -parameters -here" *Which* ones to set? It depends. Some applications are memory bound, some are CPU- or I/O bound. You want to check your applications and user profiles, then make an initial guess (e.g. about memory settings). Monitor the running system and ideally have a load test. In that load test: * Identify bottleneck #1 * Fix it * Measure again * Find out that bottleneck #2 has been promoted to #1 * Rinse/Repeat. There are no serious recommendation for initial settings as every application has a different profile. Generic tipps though: * Make -Xmx the same as -Xms (to allocate all memory immediately - no use to run out of OS memory sunday night at 3:00, rather detect this condition upon server start) * Make sure you're not using virtual memory (swap space) if you care for performance * Start with "minimum memory" for your application / load profile, add a safety margin - rather than starting with the available RAM and subtracting a safety margin: You want garbage collection to be relatively often but quick - rather than rarely and with long duration. Hope that helps, Olaf --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
