(Ubuntu 14.04 server, 8 cores, 16GB RAM)When running 3 scripts in parallel that utilise the same (other) script, the inverse of what I expect to happen occurs when renice-ing the processes as they are running.Those with higher niceness - i.e. lower priority, use more CPU Those with lower niceness - i.e. higher priority, use less CPUIt remains (pretty much) like this throughout execution.  Any ideas? Have I fundamentally misunderstood what niceness is?(I also tried renice-ing the parent scripts but it didn't seem to make a difference. sudo top had to be run to have permission to do all this.)(Also I think the times can be ignored, as 3167 was the second mgiza to be run by the parent - it originally had one with a lower PID)Edit: All three of these processes are happy (and allowed) to go up to using 800% CPU!
Nice: *Low* priority using *more* CPU
ubuntu;top;nice