Re: RFC: THE OFFLINE SCHEDULER

Christoph Lameter
2009-08-28T19:08:46Z

On Thu, 27 Aug 2009, Thomas Gleixner wrote:

> You are creating a "one special case" operation mode which is not
> justified in my opinion. Let's look at the problem you want to solve:
>
> Run exactly one thread on a dedicated CPU w/o any disturbance by the
> scheduler tick.

Thats not the problem I want to solve. There are multiple events that
could disturb a process like timers firing, softirqs and hardirqs.

> You can move away anything else than the scheduler tick from a CPU
> today already w/o a single line of code change.

How do you remove the per processor kernel threads for allocators and
other kernel subsystems? What about IPI broadcasts?