I'm using RedHat Linux V2.2.13 and I made the following test:
I launched 10 times the same program with priority 10 of Round Robin
policy (from a shell having priority 20 of FIFO policy). Each program
does an infinite busy loop (while (1)).
One minute later, I launched the "ps" command and I was expected that
the TIME values of all these processes are in an interval which is T
large, where T is given by sched_rr_get_interval() i.e. T=150ms in
this release.
But the ps result was:
PID TTY TIME CMD
652 tty1 00:00:00 login
1549 tty1 00:00:00 bash
1566 tty1 00:00:00 bash
1596 tty1 00:01:12 my_program
1597 tty1 00:00:02 my_program
1598 tty1 00:00:01 my_program
1599 tty1 00:00:01 my_program
1600 tty1 00:00:05 my_program
1601 tty1 00:00:01 my_program
1602 tty1 00:00:00 my_program
1603 tty1 00:00:16 my_program
1604 tty1 00:00:01 my_program
1605 tty1 00:00:00 my_program
1610 tty1 00:00:00 ps
Does someone have any explanation of this behavior? Thanks in advance.
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