http://planet.jboss.org/post/installing_testing_and_using_jboss_profiler_2_0_beta2
jar -tf jboss-profiler.jar
java -jar jboss-profiler-client.jar listSnapshots
修改run.conf，加上：
JAVA_OPTS="-javaagent:jboss-profiler.jar -Djboss-profiler.properties=jboss-profiler.properties -Xms128m -Xmx512m -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000"
-bash-3.2$ java -jar jboss-profiler-client.jar
Usage: Client [-h host] [-p port] <command>
startProfiler : Start the profiler 启动，一般随jboss启动而启动
stopProfiler : Stop the profiler 会自动snapshot一下
snapshot : Take a snapshot 上次snapshot（若没有则从startProfiler算起）的时间到当前snapshot的时间内的情况快照
getSnapshot : Get a snapshot //将收集的快照快速flush到磁盘上 根据listSnapshots的结果后面加序列号
listSnapshots : List snapshots // 列出所有快照
clearSnapshots : Clear snapshots //其他命令参考手册
gc : Trigger garbage collection
enable : Enable the profiler
disable : Disable the profiler
load : Load a snapshot
save : Save a snapshot
diff : Difference between snapshots
add : Add classes (repository must be enabled)
remove : Remove classes (repository must be enabled)
list : List classes
-bash-3.2$ java -jar jboss-profiler-client.jar getSnapshot 1
