Using Spark UI → Stages tab

1. Go to the Spark UI.

2. Open the Stages tab.

3. For each stage:

   • Look at the column “Executor CPU Time” (or sometimes called “Task Time”).

   • This shows total executor CPU time in milliseconds for all tasks in that stage.

4. Sum these values for all stages to get total compute time of the job.

   • Alternatively, you can download the Spark event logs and script the parsing to extract CPU time per stage.