Enabling Out Of Memory Dumps: Difference between revisions
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(Mention RM-177 related split into categories and addition of default JAVA_OPTS_DEBUG) |
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== Enabling Heapdump on OOM == | |||
In some situations a OOM dump contains valuable information. By default this feature is not enabled. If you are experiencing problems and run into Out Of Memory Errors, please enable this function. | In some situations a OOM dump contains valuable information. By default this feature is not enabled. If you are experiencing problems and run into Out Of Memory Errors, please enable this function. | ||
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<code># This properties sets the java options given to the groupware on start | <code># This properties sets the java options given to the groupware on start | ||
JAVA_XTRAOPTS="-Xmx512m -XX:+UseConcMarkSweepGC -XX:MaxPermSize=128M -Dsun.net.inetaddr.ttl=3600 -Dnetworkaddress.cache.ttl=3600 -Dnetworkaddress.cache.negative.ttl=10"</code> | |||
JAVA_XTRAOPTS="-Xmx512m -XX:+UseConcMarkSweepGC -XX:MaxPermSize=128M -Dsun.net.inetaddr.ttl=3600 -Dnetworkaddress.cache.ttl=3600 -Dnetworkaddress.cache.negative.ttl=10" | |||
</code> | |||
to | to | ||
<code># This properties sets the java options given to the groupware on start | <code># This properties sets the java options given to the groupware on start | ||
JAVA_XTRAOPTS="-Xmx512m -XX:+UseConcMarkSweepGC -XX:MaxPermSize=128M -Dsun.net.inetaddr.ttl=3600 -Dnetworkaddress.cache.ttl=3600 -Dnetworkaddress.cache.negative.ttl=10 <b>-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/<path>"</b></code> | |||
JAVA_XTRAOPTS="-Xmx512m -XX:+UseConcMarkSweepGC -XX:MaxPermSize=128M -Dsun.net.inetaddr.ttl=3600 -Dnetworkaddress.cache.ttl=3600 -Dnetworkaddress.cache.negative.ttl=10 <b>-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/<path>"</b> | |||
</code> | |||
adjust <path> to your settings. Please note that these options are only available with Oracle JVM | adjust <path> to your settings. Please note that these options are only available with Oracle JVM | ||
=== OX App Suite >= 7.8.4 === | |||
Beginning with version 7.8.4 the open-xchange-core package splits the configuration parameter JAVA_XTRAOPTS in <code>/opt/open-xchange/etc/groupware/ox-scriptconf.sh</code> into several different categories like: | |||
* <code>JAVA_OPTS_GC="-XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:NewRatio=3 -XX:+DisableExplicitGC"</code> | |||
* <code>JAVA_OPTS_LOG="-Dlogback.threadlocal.put.duplicate=false -XX:-OmitStackTraceInFastThrow"</code> | |||
* <code>JAVA_OPTS_MEM="-XX:MaxHeapSize=512M -XX:MaxPermSize=256M -XX:+UseTLAB"</code> | |||
* <code>JAVA_OPTS_NET="-Dsun.net.inetaddr.ttl=3600 -Dnetworkaddress.cache.ttl=3600 -Dnetworkaddress.cache.negative.ttl=10"</code> | |||
* <code>JAVA_OPTS_OSGI="-Dosgi.compatibility.bootdelegation=false"</code> | |||
* <code>JAVA_OPTS_SERVER="-server -Djava.awt.headless=true"</code> | |||
* <code>JAVA_OPTS_OTHER=""</code> | |||
Furthermore it adds a set of default debugging options that include the heapdump related configuration options already. By default these options are disabled/commented though. | |||
* <code>#JAVA_OPTS_DEBUG="-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/mnt/heapdump -Xloggc:/var/log/open-xchange/gc.log -verbose:gc -XX:+PrintGCDateStamps -XX:+PrintHeapAtGC -XX:+PrintGCApplicationStoppedTime -XX:+PrintTenuringDistribution"</code> | |||
Latest revision as of 16:55, 13 April 2017
Enabling Heapdump on OOM
In some situations a OOM dump contains valuable information. By default this feature is not enabled. If you are experiencing problems and run into Out Of Memory Errors, please enable this function.
Note: a dump is as big as the memory of the virtual java machine. So make sure that you save them to a place where enough free storage space is available (for more than one dump).
change the file /opt/open-xchange/etc/groupware/ox-scriptconf.sh like this:
# This properties sets the java options given to the groupware on start
JAVA_XTRAOPTS="-Xmx512m -XX:+UseConcMarkSweepGC -XX:MaxPermSize=128M -Dsun.net.inetaddr.ttl=3600 -Dnetworkaddress.cache.ttl=3600 -Dnetworkaddress.cache.negative.ttl=10"
to
# This properties sets the java options given to the groupware on start
JAVA_XTRAOPTS="-Xmx512m -XX:+UseConcMarkSweepGC -XX:MaxPermSize=128M -Dsun.net.inetaddr.ttl=3600 -Dnetworkaddress.cache.ttl=3600 -Dnetworkaddress.cache.negative.ttl=10 -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/<path>"
adjust <path> to your settings. Please note that these options are only available with Oracle JVM
OX App Suite >= 7.8.4
Beginning with version 7.8.4 the open-xchange-core package splits the configuration parameter JAVA_XTRAOPTS in /opt/open-xchange/etc/groupware/ox-scriptconf.sh into several different categories like:
JAVA_OPTS_GC="-XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:NewRatio=3 -XX:+DisableExplicitGC"JAVA_OPTS_LOG="-Dlogback.threadlocal.put.duplicate=false -XX:-OmitStackTraceInFastThrow"JAVA_OPTS_MEM="-XX:MaxHeapSize=512M -XX:MaxPermSize=256M -XX:+UseTLAB"JAVA_OPTS_NET="-Dsun.net.inetaddr.ttl=3600 -Dnetworkaddress.cache.ttl=3600 -Dnetworkaddress.cache.negative.ttl=10"JAVA_OPTS_OSGI="-Dosgi.compatibility.bootdelegation=false"JAVA_OPTS_SERVER="-server -Djava.awt.headless=true"JAVA_OPTS_OTHER=""
Furthermore it adds a set of default debugging options that include the heapdump related configuration options already. By default these options are disabled/commented though.
#JAVA_OPTS_DEBUG="-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/mnt/heapdump -Xloggc:/var/log/open-xchange/gc.log -verbose:gc -XX:+PrintGCDateStamps -XX:+PrintHeapAtGC -XX:+PrintGCApplicationStoppedTime -XX:+PrintTenuringDistribution"