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3
votes
1answer
164 views

Linux (non-transparent) per-process hugepage accounting

I've recently converted some java apps to run with linux manually-configured hugepages, as desribed here. I point out "manually-configured" because they are not transparent hugepages, which gave us ...
2
votes
2answers
3k views

Tomcat- How to check the memory settings currently in use

I have set up a Tomcat server using Server 2008 and IIS 7. How can I tell if the JAVA_OPTS environment variable is actually being used? I've heard before that the I have to edit the service.bat file ...
1
vote
4answers
4k views

java.lang.OutOfMemoryError: unable to create new native thread

I consistently get this exception when trying to run my Junit tests on my mac: java.lang.OutOfMemoryError: unable to create new native thread at java.lang.Thread.start0(Native Method) ...
4
votes
2answers
1k views

Why does the Java VM process eat up more RAM then specified in -Xmx parameter?

I have multiple servers running CentOS 5.4 and only one application running on Java VM. I've configured the Java VM with the following arguments: java -Xmx4500M -server -XX:+UseConcMarkSweepGC ...
3
votes
3answers
3k views

JAVA_OPTS -XX:+PrintGCDetails affect on performance?

Does anyone know if the PrintGCDetails affects java performance much? I've been monitoring our java garbage collecting on a staging server with the same setup as the production server. I assumed ...