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Oracle recommande Xmx == Xms (https://docs.oracle.com/cd/E21764_01/web.1111/e13814/jvm_tuning.htm#PERFM161)

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whirigoyen 2022-01-25 14:59:21 +01:00
parent 46ae4b5009
commit 930e7c5765
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HowtoTomcat.md
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@ -41,7 +41,7 @@ La configuration système de Tomcat, et notamment les paramètres de la JVM, se
TOMCAT6_SECURITY=no
# Reglages memoire de base (a adapter selon votre quantite de RAM, dans l'exemple on a une seule instance et 4 Go de RAM)
JAVA_OPTS="${JAVA_OPTS} -Xms1g -Xmx2g -XX:NewSize=512m -XX:MaxPermSize=256m -Xss256k"
JAVA_OPTS="${JAVA_OPTS} -Xms2g -Xmx2g -XX:NewSize=512m -XX:MaxPermSize=256m -Xss256k"
# Reglages du garbage collector
JAVA_OPTS="${JAVA_OPTS} -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:CMSInitiatingOccupancyFraction=80"
@ -201,7 +201,7 @@ Créer les variables d'environnement dans `/srv/tomcat/foo/conf/env` :
# Xms Allocated memory at startup.
# XX:MaxPermSize Memory allocated to internal objects.
JAVA_HOME="/usr/lib/jvm/java-1.7.0-openjdk-amd64"
JAVA_OPTS="${JAVA_OPTS} -server -Xms1g -Xmx2g -XX:NewSize=512m -XX:MaxPermSize=256m -Xss256k"
JAVA_OPTS="${JAVA_OPTS} -server -Xms2g -Xmx2g -XX:NewSize=512m -XX:MaxPermSize=256m -Xss256k"
JAVA_OPTS="${JAVA_OPTS} -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:CMSInitiatingOccupancyFraction=80"
JAVA_OPTS="${JAVA_OPTS} -XX:+UseCompressedOops"
JAVA_OPTS="${JAVA_OPTS} -XX:+UseParNewGC -XX:+CMSPermGenSweepingEnabled -XX:+CMSClassUnloadingEnabled -Xverify:none"