我有一个性能用例,我需要在其中识别某些process()
调用,EntryProcessor
这需要超过 300 毫秒。我尝试使用SlowOperationDetector
以下配置。
<!-- SlowOperation Detector Configuration -->
<property name="hazelcast.slow.operation.detector.enabled">true</property>
<property name="hazelcast.slow.operation.detector.stacktrace.logging.enabled">true</property>
<property name="hazelcast.slow.operation.detector.log.purge.interval.seconds">60000</property>
<property name="hazelcast.slow.operation.detector.log.retention.seconds">60000</property>
<property name="hazelcast.slow.operation.detector.threshold.millis">300</property>
我给出了一个在内部休眠 1 秒的示例测试代码process()
。
public static void main(String args[])
{
Config cfg = null;
try {
cfg = new FileSystemXmlConfig("C:\\workarea\\hazelcast\\hazelcast-perf.xml");
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
HazelcastInstance hazelcastInstance = Hazelcast.newHazelcastInstance(cfg);
IMap<String, Employee> employeesMap = hazelcastInstance.getMap("anyMap");
employeesMap.put("100", new Employee(100));
SlowEntryProcessor slowEntryProcessor = new SlowEntryProcessor();
employeesMap.executeOnKey("100", slowEntryProcessor);
}
static public class SlowEntryProcessor implements EntryProcessor<String, Employee>
{
private static final long serialVersionUID = 1L;
@Override
public EntryBackupProcessor<String, Employee> getBackupProcessor()
{
return null;
}
@Override
public Object process(Entry<String, Employee> arg0)
{
System.out.println("About to sleep");
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println("done processing");
return null;
}
}
当配置的阈值小于 1000 毫秒时,我看不到任何日志。所以在这个例子中,我没有看到任何缓慢的操作堆栈跟踪或日志。
如果我将睡眠时间更改为 2 秒,并将慢操作阈值更改为 1 秒,慢操作检测器将启动并显示日志。
这是一个错误SlowOperationDetector
还是我在这里遗漏了什么?