# With cpu.shares 16 prio IDLE "bogomips" process running 20:52:08 0 ubuntu@host:/tmp% sudo cgexec -g cpu:pro chrt -r 99 sudo -u ubuntu time -v ffmpeg ... Command being timed: "ffmpeg ..." User time (seconds): 12.18 System time (seconds): 0.17 Percent of CPU this job got: 100% Elapsed (wall clock) time (h:mm:ss or m:ss): 0:12.24 Average shared text size (kbytes): 0 Average unshared data size (kbytes): 0 Average stack size (kbytes): 0 Average total size (kbytes): 0 Maximum resident set size (kbytes): 43904 Average resident set size (kbytes): 0 Major (requiring I/O) page faults: 0 Minor (reclaiming a frame) page faults: 3639 Voluntary context switches: 5932 Involuntary context switches: 6 Swaps: 0 File system inputs: 0 File system outputs: 20896 Socket messages sent: 0 Socket messages received: 0 Signals delivered: 0 Page size (bytes): 4096 Exit status: 0 # ffmpeg is alone 20:52:35 0 ubuntu@host:/tmp% sudo cgexec -g cpu:pro chrt -r 99 sudo -u ubuntu time -v ffmpeg ... Command being timed: "ffmpeg ..." User time (seconds): 6.86 System time (seconds): 0.10 Percent of CPU this job got: 100% Elapsed (wall clock) time (h:mm:ss or m:ss): 0:06.90 Average shared text size (kbytes): 0 Average unshared data size (kbytes): 0 Average stack size (kbytes): 0 Average total size (kbytes): 0 Maximum resident set size (kbytes): 45664 Average resident set size (kbytes): 0 Major (requiring I/O) page faults: 0 Minor (reclaiming a frame) page faults: 3624 Voluntary context switches: 5698 Involuntary context switches: 4 Swaps: 0 File system inputs: 0 File system outputs: 20896 Socket messages sent: 0 Socket messages received: 0 Signals delivered: 0 Page size (bytes): 4096 Exit status: 0