Right now, job duration is always reported in milliseconds. For long running jobs, this is not the best way.
We should incorporate some kind of granularity in this. I propose this:
0-60 s : as x ms
60-3600 s: as x min y s
3600-86400 s: as x h y min [report as x h y min z s on hover]
> 86400 s: as x d y h [report as x d y h z min t s on hover]
I will start working on this, and we can change the granularity if someone has a better idea.