private static void checkSunGC() throws Exception {
// Test com.sun.management proxy
List<GarbageCollectorMXBean> gcs = getGarbageCollectorMXBeans();
for (GarbageCollectorMXBean gc : gcs) {
ObjectName sunGc =
new ObjectName(GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE + ",name=" + gc.getName());
CompositeData cd = (CompositeData) server.getAttribute(sunGc, "LastGcInfo");
if (cd != null) {
System.out.println("GC statistic for : " + gc.getName());
printGcInfo(cd);
}
}
}
/**
* Prints the verbose GC log to System.out to list the memory usage of all memory pools as well as
* the GC statistics.
*/
public void printVerboseGc() {
System.out.println("Uptime: " + formatMillis(rmbean.getUptime()));
System.out.println("Heap usage: " + mmbean.getHeapMemoryUsage());
System.out.println("Non-Heap memory usage: " + mmbean.getNonHeapMemoryUsage());
for (GarbageCollectorMXBean gc : gcmbeans) {
System.out.print(" [" + gc.getName() + ": ");
System.out.print("Count=" + gc.getCollectionCount());
System.out.print(" GCTime=" + formatMillis(gc.getCollectionTime()));
System.out.print("]");
}
System.out.println();
for (MemoryPoolMXBean p : pools) {
System.out.print(" [" + p.getName() + ":");
MemoryUsage u = p.getUsage();
System.out.print(" Used=" + formatBytes(u.getUsed()));
System.out.print(" Committed=" + formatBytes(u.getCommitted()));
System.out.println("]");
}
}