Within the UI: Click on the "i" information icon within the dataset for the job. There is much information. "Job Runtime" is what you are looking for:
Job Metrics core Cores Allocated 11 Job End Time 2017-05-11 15:40:20 Job Runtime (Wall Clock) 15 minutes Job Start Time 2017-05-11 15:25:07 cpuinfo Processor Count 64 meminfo Total System Memory 2.9 TB Total System Swap 16.4 GB
API/Database: This information is within the Galaxy database, so an API query would be possible. I can't definitively confirm if this is the correct query or not yet this is probably it: https://docs.galaxyproject.org/en/master/lib/galaxy.webapps.galaxy.api.html#galaxy.webapps.galaxy.api.jobs.JobController.show
I'll also ask if someone else on the team knows. Any other Galaxy developers reading this are also welcome to post.
Thanks! Jen, Galaxy team