Messages in this thread | | | Date | Thu, 18 Mar 2004 10:00:48 +1100 | From | Nick Piggin <> | Subject | Re: Scheduler Problem ???? |
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Emmanuel Fleury wrote:
>Hi all, > >I am running a 2.6.4 (with preemptible kernel activated). >What I did is the following: > >1) Compile the sched_test.c program (at the end of the mail): > >[root@hermes sched]$ gcc -o sched_test sched_test.c > >2) Set the priority of the root shell as the highest: >[root@hermes sched]$ ps > PID TTY TIME CMD > 1519 pts/0 00:00:00 bash > 2020 pts/0 00:00:00 ps >[root@hermes sched]$ chrt -f -p 99 1519 > >3) Run sched_test: >[root@hermes sched]$ chrt -f 10 ./sched_test 100 >bye now. > > > >Here during the execution of sched_test everything is frozen. > > >Did I do something wrong ???? > >
Realtime processes aren't preemptible at all by non realtime processes or realtime processes of a lesser priority.
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