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ThreadStatsTest.java
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170 lines (143 loc) · 6.52 KB
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import static org.junit.Assert.assertTrue;
import java.lang.management.ManagementFactory;
import java.lang.management.OperatingSystemMXBean;
import java.lang.management.RuntimeMXBean;
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;
import javax.management.MBeanServer;
import javax.management.MBeanServerConnection;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import org.junit.Test;
import beansoft.profiler.global.CommonConstants;
public class ThreadStatsTest {
@Test
public void testProcessCPUUsage() throws Exception {
com.sun.management.OperatingSystemMXBean operatingSystemMXBean = (com.sun.management.OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
int availableProcessors = operatingSystemMXBean.getAvailableProcessors();
long prevUpTime = runtimeMXBean.getUptime();
long prevProcessCpuTime = operatingSystemMXBean.getProcessCpuTime();
double cpuUsage;
try
{
Thread.sleep(500);
}
catch (Exception ignored) { }
operatingSystemMXBean = (com.sun.management.OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
long upTime = runtimeMXBean.getUptime();
long processCpuTime = operatingSystemMXBean.getProcessCpuTime();
long elapsedCpu = processCpuTime - prevProcessCpuTime;
long elapsedTime = upTime - prevUpTime;
cpuUsage = Math.min(99F, elapsedCpu / (elapsedTime * 10000F * availableProcessors));
System.out.println("Java CPU: " + cpuUsage);
}
// See Thread.State.BLOCKED etc
byte getState(ThreadInfo threadInfo) {
Thread.State state = threadInfo.getThreadState();
switch (state) {
case BLOCKED:
return CommonConstants.THREAD_STATUS_MONITOR;
case RUNNABLE:
return CommonConstants.THREAD_STATUS_RUNNING;
case TIMED_WAITING:
case WAITING:
return isSleeping(threadInfo.getStackTrace()[0]) ?
CommonConstants.THREAD_STATUS_SLEEPING :
CommonConstants.THREAD_STATUS_WAIT;
case TERMINATED:
case NEW:
return CommonConstants.THREAD_STATUS_ZOMBIE;
}
return CommonConstants.THREAD_STATUS_UNKNOWN;
}
boolean isSleeping(StackTraceElement element) {
return Thread.class.getName().equals(element.getClassName()) &&
"sleep".equals(element.getMethodName()); // NOI18N
}
// private String retrieveStackTrace(ThreadInfo tinfo)
// {
// ThreadInfo localThreadInfo = this.threadMXBean.getThreadInfo(paramThreadInfoStats.getThreadId(), this.maxStackTraceDepth);
// if (localThreadInfo != null)
// {
// StackTraceElement[] stackTraces = localThreadInfo.getStackTrace();
// StringBuffer localStringBuffer = new StringBuffer();
// for (StackTraceElement stackTraceElement : stackTraces)
// {
// localStringBuffer.append(stackTraceElement.toString());
// localStringBuffer.append("\n");
// }
// return localStringBuffer.toString();
// }
// return "";
// }
private static final String PROCESS_CPU_TIME_ATTR = "ProcessCpuTime"; // NOI18N
private static final String PROCESSING_CAPACITY_ATTR = "ProcessingCapacity"; // NOI18N
long getProcessCPUTime(MBeanServerConnection conn, long processCPUTimeMultiplier) {
if (conn != null) {
try {
Long cputime = (Long)conn.getAttribute(getOSName(),PROCESS_CPU_TIME_ATTR);
return cputime.longValue()*processCPUTimeMultiplier;
} catch (Exception ex) {
ex.printStackTrace();
}
}
return -1;
}
long getProcessCPUTimeMultiplier(MBeanServerConnection conn) {
if (conn != null) {
try {
Number mul = (Number) conn.getAttribute(getOSName(),PROCESSING_CAPACITY_ATTR);
return mul.longValue();
} catch (Exception ex) {
// ex.printStackTrace();
System.out.println(ex);
}
}
return 1;
}
private static ObjectName getOSName() {
try {
return new ObjectName(ManagementFactory.OPERATING_SYSTEM_MXBEAN_NAME);
} catch (MalformedObjectNameException ex) {
throw new RuntimeException(ex);
}
}
private final int processorsCount = 0;
private long prevUpTime = -1;
private long prevProcessCpuTime = -1;
private long prevProcessGcTime = -1;
@Test
public void testThreadStats() throws Exception {
Thread.sleep(2000);
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
OperatingSystemMXBean osMXBean = ManagementFactory.getOperatingSystemMXBean();
MBeanServer mBeanServer = ManagementFactory.getPlatformMBeanServer();
long processCPUTimeMultiplier = getProcessCPUTimeMultiplier(mBeanServer);
long processCPUTime = getProcessCPUTime(mBeanServer, processCPUTimeMultiplier);
long upTime = runtimeMXBean.getUptime();
long startTime = runtimeMXBean.getStartTime();
String runTimemsg = String.format(
"Start at %s , run %d seconds, process cpu time %d seconds",
java.text.DateFormat.getDateTimeInstance().format(new java.util.Date(startTime)), upTime / 1000, processCPUTime / 1000);
System.out.println(runTimemsg);
assertTrue(threadMXBean.isThreadCpuTimeSupported());
assertTrue(threadMXBean.isCurrentThreadCpuTimeSupported());
threadMXBean.setThreadContentionMonitoringEnabled(true);
threadMXBean.setThreadCpuTimeEnabled(true);
assertTrue(threadMXBean.isThreadCpuTimeEnabled());
ThreadInfo[] threadInfo = threadMXBean.getThreadInfo(threadMXBean.getAllThreadIds(), 2);
for (ThreadInfo threadInfo2 : threadInfo) {
long blockedTime = threadInfo2.getBlockedTime();
long waitedTime = threadInfo2.getWaitedTime();
long cpuTime = threadMXBean.getThreadCpuTime(threadInfo2.getThreadId());
long userTime = threadMXBean.getThreadUserTime(threadInfo2.getThreadId());
int state = getState(threadInfo2);
String msg = String.format(
"%s: %d ns cpu time, %d ns user time, blocked for %d ms, waited %d ms, state %d",
threadInfo2.getThreadName(), cpuTime, userTime, blockedTime, waitedTime, state);
System.out.println(msg);
}
}
}