From my understanding, setenv is not a default file, and any settings inside are "custom". And all of these options are used by the JVM, so in your case thy are probably redundant. I only use JAVA_OPTS under setenv.sh and use it in a way to add my options to the startup.
export JAVA_OPTS="$JAVA_OPTS\ -XX:+UseParallelGC\ -XX:ParallelGCThreads=20\ -XX:+CMSClassUnloadingEnabled\ -Xss256k\ -Xms974M\ -Xmn974M\ -Xmx1948M" Adam -----Original Message----- From: Onno van der Straaten <ostraa...@onknows.com> Sent: Monday, August 2, 2021 7:57 PM To: users@tomcat.apache.org Subject: Xms Xmx in JAVA_OPT vs CATALINA_OPTS Hi, I was looking at a Tomcat deployment and noticed settings in setenv.sh as shown below. I noticed that Xms and Xmx is in JAVA_OPTS and CATALINA_OPTS with the exact same settings. Do these settings make sense? What is the purpose of repeating those settings? I understand that JAVA_OPTS is for the JVM and CATALINA_OPTS is specific to Tomcat. How do these settings relate to each other? I am assuming they could be different. Thanks and Regards, Onno JAVA_HOME="/usr/lib/jvm/jdk11_0411_oj9" JAVA_OPTS="-Xms3000m -Xmx3000m" CATALINA_OPTS="-Dcom.sun.management.jmxremote.port=8375 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Dorg.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true -Dfile.encoding=UTF-8 -Dsun.net.inetaddr.ttl=300 -server -Dorg.apache.tomcat.util.http.Parameters.MAX_COUNT=8192 -Xms3000m -Xmx3000m -XX:MaxPermSize=500m -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:+PrintGCDateStamps -verbose:gc -XX:+PrintGCDetails -Xloggc:"/opt/tomcat/tomcat-9.0.40/logs/garbage.log" -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Djavax.sql.DataSource.Factory=org.apache.commons.dbcp.BasicDataSourceFactory" CAUTION: This email originated from outside of your organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. Do not reply to emails that contain a From address you are unfamiliar with. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
