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ngi/setenv.sh

Created December 19, 2012 09:13
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  1. ngi revised this gist Dec 19, 2012. 1 changed file with 1 addition and 0 deletions.
    1 change: 1 addition & 0 deletions setenv.sh
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    Original file line number Diff line number Diff line change
    @@ -6,6 +6,7 @@ export JAVA_OPTS="-Djava.awt.headless=true"
    # discourage address map swapping by setting Xms and Xmx to the same value
    # http://confluence.atlassian.com/display/DOC/Garbage+Collector+Performance+Issues
    export CATALINA_OPTS="$CATALINA_OPTS -Xms512m"
    export CATALINA_OPTS="$CATALINA_OPTS -Xmx512m"

    # Increase maximum perm size for web base applications to 4x the default amount
    # http://wiki.apache.org/tomcat/FAQ/Memoryhttp://wiki.apache.org/tomcat/FAQ/Memory
  2. ngi created this gist Dec 19, 2012.
    2 changes: 2 additions & 0 deletions gistfile1.sh
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    @@ -0,0 +1,2 @@
    sudo nano /usr/share/tomcat7/bin/setenv.sh
    sudo chown tomcat7:tomcat7 /usr/share/tomcat7/bin/setenv.sh
    75 changes: 75 additions & 0 deletions setenv.sh
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    @@ -0,0 +1,75 @@
    #! /bin/sh

    # reset default tomcat JAVA_OPTS (angelo)
    export JAVA_OPTS="-Djava.awt.headless=true"

    # discourage address map swapping by setting Xms and Xmx to the same value
    # http://confluence.atlassian.com/display/DOC/Garbage+Collector+Performance+Issues
    export CATALINA_OPTS="$CATALINA_OPTS -Xms512m"

    # Increase maximum perm size for web base applications to 4x the default amount
    # http://wiki.apache.org/tomcat/FAQ/Memoryhttp://wiki.apache.org/tomcat/FAQ/Memory
    export CATALINA_OPTS="$CATALINA_OPTS -XX:MaxPermSize=512m"

    # Reset the default stack size for threads to a lower value (by 1/10th original)
    # By default this can be anywhere between 512k -> 1024k depending on x32 or x64
    # bit Java version.
    # http://www.springsource.com/files/uploads/tomcat/tomcatx-large-scale-deployments.pdf
    # http://www.oracle.com/technetwork/java/hotspotfaq-138619.html
    export CATALINA_OPTS="$CATALINA_OPTS -Xss192k"

    # Oracle Java as default, uses the serial garbage collector on the
    # Full Tenured heap. The Young space is collected in parallel, but the
    # Tenured is not. This means that at a time of load if a full collection
    # event occurs, since the event is a 'stop-the-world' serial event then
    # all application threads other than the garbage collector thread are
    # taken off the CPU. This can have severe consequences if requests continue
    # to accrue during these 'outage' periods. (specifically webservices, webapps)
    # [Also enables adaptive sizing automatically]
    export CATALINA_OPTS="$CATALINA_OPTS -XX:+UseParallelGC"

    # This is interpreted as a hint to the garbage collector that pause times
    # of <nnn> milliseconds or less are desired. The garbage collector will
    # adjust the Java heap size and other garbage collection related parameters
    # in an attempt to keep garbage collection pauses shorter than <nnn> milliseconds.
    # http://java.sun.com/docs/hotspot/gc5.0/ergo5.html
    export CATALINA_OPTS="$CATALINA_OPTS -XX:MaxGCPauseMillis=1500"

    # A hint to the virtual machine that it.s desirable that not more than:
    # 1 / (1 + GCTimeRation) of the application execution time be spent in
    # the garbage collector.
    # http://themindstorms.wordpress.com/2009/01/21/advanced-jvm-tuning-for-low-pause/
    export CATALINA_OPTS="$CATALINA_OPTS -XX:GCTimeRatio=9"

    # The hotspot server JVM has specific code-path optimizations
    # which yield an approximate 10% gain over the client version.
    export CATALINA_OPTS="$CATALINA_OPTS -server"

    # Disable remote (distributed) garbage collection by Java clients
    # and remove ability for applications to call explicit GC collection
    export CATALINA_OPTS="$CATALINA_OPTS -XX:+DisableExplicitGC"

    # Check for application specific parameters at startup
    if [ -r "$CATALINA_BASE/bin/app.sh" ]; then
    . "$CATALINA_BASE/bin/app.sh"
    fi

    echo "Using CATALINA_OPTS:"
    for arg in $CATALINA_OPTS
    do
    echo ">> " $arg
    done
    echo ""

    echo "Using JAVA_OPTS:"
    for arg in $JAVA_OPTS
    do
    echo ">> " $arg
    done

    echo ""
    echo "Tomcat Configuration: '$CATALINA_CONF'"
    echo "Tomcat Logging: '$LOGGING_CONFIG'"

    echo "_______________________________________________"
    echo ""