Hi,
When I try to start a java application with the following JVM options:
-Xms64m
-Xmx1024m
-Xrunhprof:cpu=times
-XX:+UseParNewGC
-XX:+CMSParallelRemarkEnabled
-XX
arallelGCThreads=2
-XX:NewRatio=8
-XX:+UseConcMarkSweepGC
-XX:CMSInitiatingOccupancyFraction=80
-Xloggc:siva.log
-XX:+PrintGCDetails
-XX:-UseMPSS
the JVM doesn't get started. And when I removed either "-Xrunhprof:cpu=times" or "-XX:+UseConcMarkSweepGC" options, the JVM started without any error.
Is there any dependency between the above mentioned 2 options and I also found that an error message as mentioned below is displayed when both the options are provided:
****************************************************************************
Conflicting collector combinations in option list; please refer to the release notes for the combinations allowed
Unable to create JVM.
****************************************************************************
It would be of great help, if anybody could help me out in this regard.
Note:
1. I wanted the option "-XX:+UseConcMarkSweepGC" to be present while starting the JVM and I would also like to analyse the CPU usage.
2. I also found that after removing "-XX:+UseConcMarkSweepGC" option, the java application became very slower.
Thanks
- Siva