[jboss-jira] [JBoss JIRA] (WFCORE-3996) GC logging is not working on Java 9
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https://issues.jboss.org/browse/WFCORE-3996?page=com.atlassian.jira.plugi...
]
James Perkins commented on WFCORE-3996:
---------------------------------------
I think this is what we want for the {{JAVA_OPTS}} on Java 9+
{code}
-Xlog:gc*:file=$JBOSS_LOG_DIR/gc.log:time,uptimemillis:filecount=5,filesize=3M
{code}
We need to remove the {{-verbose:gc}} which will stop the stderr output. We could also do
something like:
{code}
-Xlog:gc*=$GC_LOG_LEVEL:file=$JBOSS_LOG_DIR/gc.log:time,uptimemillis:filecount=5,filesize=3M
{code}
which would default {{GC_LOG_LEVEL}} to {{info}} so if we need {{debug}} or {{trace}} it
could be overridden without requiring a script change.
Also because this was part of a JEP all JVM vendors must support the flags so we
shouldn't need to test if the options exist, e.g. {{"$JAVA" $JVM_OPTVERSION
-Xlog:gc*:file="$JBOSS_LOG_DIR/gc.log":time,uptimemillis:filecount=5,filesize=3M
-version >/dev/null 2>&1 &&}} can go away for Java 9+.
GC logging is not working on Java 9
-----------------------------------
Key: WFCORE-3996
URL: https://issues.jboss.org/browse/WFCORE-3996
Project: WildFly Core
Issue Type: Bug
Components: Scripts
Reporter: Rostislav Svoboda
Assignee: Radovan Stancel
Priority: Blocker
Labels: Java11, blocker-WF14
GC logging is not working on Java 9. This is related to the fact G1 GC is default and
there are changes in configuration option.
{code}
GC_LOG="true" ./standalone.sh
{code}
Java 8:
{code}
JAVA_OPTS: -server -verbose:gc
-Xloggc:"/Users/rsvoboda/TESTING/7.2.0.CD12.CR1/jboss-eap-7.2/standalone/log/gc.log"
-XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+UseGCLogFileRotation
-XX:NumberOfGCLogFiles=5
-XX:GCLogFileSize=3M -XX:-TraceClassUnloading -Xms1303m -Xmx1303m -XX:MetaspaceSize=96M
-XX:MaxMetaspaceSize=256m -Djava.net.preferIPv4Stack=true
-Djboss.modules.system.pkgs=org.jboss.byteman -Djava.awt.headless=true
{code}
Java 9:
{code}
JAVA_OPTS: -server -Xms1303m -Xmx1303m -XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=256m
-Djava.net.preferIPv4Stack=true -Djboss.modules.system.pkgs=org.jboss.byteman
-Djava.awt.headless=true
{code}
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