GlobalClock (Xceptance XLT 6.2.3 API)

java.lang.Object
- com.xceptance.xlt.api.engine.GlobalClock

```
public abstract class GlobalClock
extends java.lang.Object
```
The GlobalClock provides the current time in the test cluster. Depending on the configuration, the GlobalClock uses either the master controller's time as the reference time or the local system time (the default).

Sometimes the local system clocks of the test machines diverge significantly. This may lead to unexpected results in the test report. There are two ways to get around this:
1. Install a NTP client on all test machines which synchronizes the local time with a time server. This is the preferred solution.
2. Use the time of one machine (in this case the master controller's machine) as the reference time. All timestamps are created relative to this reference time.
If the latter approach is used, one needs to give the system the chance to correct the local time. So, avoid using System.currentTimeMillis() in favor of GlobalClock.getInstance().getTime().

Constructor Summary

Constructors
Constructor Description

GlobalClock()

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`static GlobalClock`	`getInstance()`	Returns the GlobalClock singleton.
`abstract long`	`getTime()`	Returns the current time as a number of milliseconds elapsed since January 1st, 1970 GMT.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - GlobalClock
```
public GlobalClock()
```
- Method Detail
  - getInstance
```
public static GlobalClock getInstance()
```
    Returns the GlobalClock singleton.
    
    Returns:
    
    the global clock
  - getTime
```
public abstract long getTime()
```
    Returns the current time as a number of milliseconds elapsed since January 1st, 1970 GMT.
    
    Returns:
    
    the time