Difference between revisions of "Java"
From Vague Hope Wiki
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* http://mechanical-sympathy.blogspot.co.uk/2013/07/java-garbage-collection-distilled.html | * http://mechanical-sympathy.blogspot.co.uk/2013/07/java-garbage-collection-distilled.html | ||
* http://www.oracle.com/technetwork/java/javase/gc-tuning-6-140523.html | * http://www.oracle.com/technetwork/java/javase/gc-tuning-6-140523.html | ||
+ | |||
+ | java \ | ||
+ | -Xms300m \ | ||
+ | -Xmx600m \ | ||
+ | -verbose:gc \ | ||
+ | -XX:MaxGCPauseMillis=20 \ | ||
+ | -XX:+UseConcMarkSweepGC \ | ||
+ | -XX:+CMSIncrementalMode \ | ||
+ | -XX:+CMSIncrementalPacing \ |
Revision as of 04:00, 14 December 2013
OpenJDK Heapdump
sudo yum install java-1.6.0-openjdk-devel sudo jmap -F -J-d64 -dump:live,format=b,file=/root/heap.bin 2232 sudo jstack -F 2232 > /root/stacks.txt
Remote Debug Tomcat6
In /usr/sbin/tomcat6:
-Xdebug -Xrunjdwp:transport=dt_socket,address=62277,server=y,suspend=n
GC
- http://mechanical-sympathy.blogspot.co.uk/2013/07/java-garbage-collection-distilled.html
- http://www.oracle.com/technetwork/java/javase/gc-tuning-6-140523.html
java \ -Xms300m \ -Xmx600m \ -verbose:gc \ -XX:MaxGCPauseMillis=20 \ -XX:+UseConcMarkSweepGC \ -XX:+CMSIncrementalMode \ -XX:+CMSIncrementalPacing \