Commit 71d24753 authored by Holger Levsen's avatar Holger Levsen
Browse files

more java tuning/stabbing 



Signed-off-by: default avatarHolger Levsen <holger@layer-acht.org>
parent 6805c87a

bin/start-slave.sh

+1 −1
Original line number Diff line number Diff line
@@ -17,6 +17,6 @@ if [ -f "$f" ]; then 
fi



echo "This jenkins slave.jar will run as PID $$."

export JAVA_ARGS="-Xms256M -Xmx1G"

export JAVA_ARGS="-Xms128M -Xmx512M"

export MALLOC_ARENA_MAX=2

exec java $JAVA_ARGS -jar /var/lib/jenkins/slave.jar

hosts/jenkins/etc/default/jenkins

+2 −2
Original line number Diff line number Diff line
@@ -17,7 +17,7 @@ JAVA_ARGS="-Djava.awt.headless=true" 
#JAVA_ARGS="-Xmx256m"

#JAVA_ARGS="-Djava.net.preferIPv4Stack=true" # make jenkins listen on IPv4 address

# See some recommendation from https://jenkins.io/blog/2016/11/21/gc-tuning/

JAVA_ARGS="$JAVA_ARGS -Xms8G -Xmx24G"  # heap settings

JAVA_ARGS="$JAVA_ARGS -Xms4G -Xmx12G"  # heap settings

JAVA_ARGS="$JAVA_ARGS -server -XX:+AlwaysPreTouch"

# store heap dumps in case of OOM, to investigate it later

JAVA_ARGS="$JAVA_ARGS -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=$JENKINS_HOME/heapDumps/"
@@ -28,7 +28,7 @@ JAVA_ARGS="$JAVA_ARGS -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+PrintHeapA 
JAVA_ARGS="$JAVA_ARGS -XX:+PrintGCCause -XX:+PrintTenuringDistribution -XX:+PrintReferenceGC -XX:+PrintAdaptiveSizePolicy"

# G1 GC settings

JAVA_ARGS="$JAVA_ARGS -XX:+UseG1GC -XX:+ExplicitGCInvokesConcurrent -XX:+ParallelRefProcEnabled -XX:+UseStringDeduplication"

JAVA_ARGS="$JAVA_ARGS -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=20 -XX:+UnlockDiagnosticVMOptions -XX:G1SummarizeRSetStatsPeriod=1"

JAVA_ARGS="$JAVA_ARGS -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=10 -XX:+UnlockDiagnosticVMOptions -XX:G1SummarizeRSetStatsPeriod=1"

# h01ger trying stuff

JAVA_ARGS="$JAVA_ARGS -XX:+UseCompressedOops -XX:+UseCompressedClassPointers"

export MALLOC_ARENA_MAX=2