run time in compute engine is slow than physical time

[truckerpathInte]

I run python code in compute engine,  the run time is shorter than the physical time. For example, the physical time is 10 minutes, when I use ps -aux to check the the time of this job, it may be shown only as 2 minutes.

[dionv]

Hello @truckerpathInte ,

There are some factors needed to be considered between physical time and runtime like system load, concurrency, and hardware differences.