Messages in this thread | | | Date | Sat, 24 Mar 2012 17:25:41 +0530 | Subject | Query on Linux process sheduling | From | "B.Vinai Kumar" <> |
| |
Hi Guys,
I have embedded box running 2.6.28.9 linux kernel and running 6 Real time task threads (With SCHED_RR as scheduling policy). Together all the 6 threads running is consuming around 85% of CPU, which is expected.
All the threads have a 10ms of cycle.
The issue is for every second I have observed that for 50ms these Real time task threads are not scheduling at all. During this 50ms the process swapper/idle task is being scheduled(pid 0).
Is this the behaviour is due to these values?
# cat /proc/sys/kernel/sched_rt_period_us 1000000 # cat /proc/sys/kernel/sched_rt_runtime_us 950000
What changes can be done to the kernel so that the Real time task threads get scheduled in that 50ms interval too?
Thanks, Vinai.
| |