[Bug 110950] RT cpu starvation due to driver threads or memory access

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110950

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|preemption issues           |RT cpu starvation due to
                   |                            |driver threads or memory
                   |                            |access

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
I don't suppose you have a handy recipe for setting up a machine with an
isolated RT CPU?

https://gitlab.freedesktop.org/drm/igt-gpu-tools/blob/master/benchmarks/gem_syslatency.c

is a tool we use to try and assess the damage we cause to the system by
measuring the latency of an RT thread. But I've never before setup an isolated
cpu...

Just to check, do you mean the cpu isolation feature in the kernel, or are just
using cpuset?

And also to confirm you are talking about CPU preemption and not GPU
preeemption?

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