Created
December 26, 2011 11:26
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Garbage collectors used in HotSpot JVM under different VM Options
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| import java.io.IOException; | |
| import java.lang.management.ManagementFactory; | |
| import java.util.Set; | |
| import javax.management.MBeanServer; | |
| import javax.management.ObjectName; | |
| /** | |
| * Print the Collector used in the program. | |
| * @author khotyn | |
| */ | |
| public class GarbageCollectors { | |
| public static void main(String[] args) throws InterruptedException, IOException { | |
| MBeanServer server = ManagementFactory.getPlatformMBeanServer(); | |
| Set<ObjectName> names = server.queryNames(null, null); | |
| for (ObjectName name : names) { | |
| if (name.toString().contains("GarbageCollector")) { | |
| System.out.println(name); | |
| } | |
| } | |
| } | |
| } |
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| echo 'Client:' | |
| java -client GarbageCollectors | |
| echo 'Server:' | |
| java -server GarbageCollectors | |
| echo 'UseSerialGC:' | |
| java -XX:+UseSerialGC GarbageCollectors | |
| echo 'UseParallelGC:' | |
| java -XX:+UseParallelGC GarbageCollectors | |
| echo 'UseParNewGC:' | |
| java -XX:+UseParNewGC GarbageCollectors | |
| echo 'UseParalllelOldGC:' | |
| java -XX:+UseParallelOldGC GarbageCollectors | |
| echo 'UseConcMarkSweepGC:' | |
| java -XX:+UseConcMarkSweepGC GarbageCollectors | |
| echo 'UseG1GC:' | |
| java -XX:+UseG1GC GarbageCollectors |
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The result: