RE: sched/fair: scheduler not running high priority process on idle cpu

From: David Laight
Date: Wed Jan 15 2020 - 09:43:35 EST


From: Steven Rostedt
> Sent: 15 January 2020 13:19
...
> BTW, I believe distros compile with "CONFIG_IRQ_FORCED_THREADING" which
> means if you add to the kernel command line "threadirqs" the interrupts
> will be run as threads. Which allows for even more preemption.

So they do...
I guess that'll stop the bh code running 'on top of' my RT thread.
But won't help getting the RT process running when the 'events_unbound'
kernel worker is running.

They also use grub2 which is so complicated update-grub is always used
which dumbs everything down to a default set that is hard to change.

David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)