set internal time resolution

[AlvaroVega]

https://esper.espertech.com/release-8.4.0/reference-esper/html_single/#apiruntime-time-internal

[17.6.1.4. Internal Timer Settings]()

This option can be used to disable the internal timer thread and such have the application supply external time events, as well as to set a timer resolution.

The next code snippet shows how to disable the internal timer thread via the configuration API:

[Configuration config = new Configuration();
config.getRuntime().getThreading().setInternalTimerEnabled(false);]()

This snippet of XML configuration leaves the internal timer enabled (the default) and sets a resolution of 200 milliseconds (the default is 100 milliseconds):

[<esper-configuration xmlns="http://www.espertech.com/schema/esper">
  <runtime>
    <threading>
      <internal-timer enabled="true" msec-resolution="200"/>
    </threading>
  </runtime>
</esper-configuration>]()

We recommend that when disabling the internal timer, applications send an external timer event setting the start time before creating statements, such that statement start time is well-defined.

[AlvaroVega]

https://github.com/telefonicaid/perseo-core/blob/master/perseo-main/src/main/java/com/telefonica/iot/perseo/Utils.java#L76

[fgalan]

Fixed in PR #195