The Empirica Signal listener process is responsible for identifying background work and assigning it to processes for execution. The listener process starts when the application starts up, and updates an associated heartbeat date and time value every 2-30 seconds while the application is running.
Occasionally, the listener process terminates unexpectedly (either because it encounters an error or is stopped by a system operator).
When a run is submitted, the application checks the heartbeat value to determine if the listener process is still running. If the listener process is not running, the application restarts it automatically, if the Auto-Start Local Listener site option is set to Yes. You can also restart the listener process manually from within the application at any time.
1. Click Settings.
The Settings page appears.
2. In the Administer System section, click Restart Listener.
The Starting Listener page appears.
A message states that the listener was started.
Note: You can restart the listener process only if the listener is running as part of the Empirica Signal website. If the listener is running outside of the Empirica Signal website, clicking Restart Listener has no effect.