Control Center will allow you to cancel a batch processing task before it starts by deleting it from the queue, but if you delete a batch processing task while it is already processing, it will still finish in the background.
Vectorizing tasks are added to the queue on a per-drawing basis. This means that if you want to interrupt the vectorization of a scene, you can simply stop the batch processing service and clear the queue in Control Center. However, rendering tasks are added to the queue on a per-scene basis. Therefore, the only way to interrupt the rendering of a scene while it is currently rendering is by interrupting the Harmony process that is rendering the scene.
In a terminal, enter the following command:
$ pgrep tbprocess
The command will output the process ID (pid) of the batch processing service (tbprocess).
Enter the following command to get the process ID of the child process of the batch processing service, replacing <pid> with the process ID of the batch processing service:
$ pgrep -P <pid of tbprocess>
This outputs the process ID of the shell in which the batch processing job is being ran.
Enter the same command, but this time, put the process ID of the child process of the batch processing service.
$ pgrep -P <pid of shell>
This outputs the process ID of the Harmony session that is rendering the job.
Enter the same command, but again, put the process ID returned by the last command instead:
$ pgrep -P <pid of Harmony>
This either outputs nothing or, if Harmony is rendering a movie file, the process ID of the media server creating the movie file.
Enter the following command followed by the process IDs for the shell, the Harmony session and, if applicable, the utility creating the movie file:
$ sudo kill -SIGKILL <pid of shell> <pid of Harmony> <pid of media server>
You can execute each command in one go by copying and pasting the following line to the terminal:
$ TBPROCESSPID=$(pgrep tbprocess) && TBSHELLPID=$(pgrep -P $TBPROCESSPID) && TBHARMONYPID=$(pgrep -P $TBSHELLPID) && TBMEDIAPID=$(pgrep -P $TBHARMONYPID); sudo kill -SIGKILL $TBSHELLPID $TBHARMONYPID $TBMEDIAPID
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