Re: stochastic fair queueing in the elevator [Re: [BENCHMARK] 2.4.20-ck3 / aa / rmap with contest]

Pavel Machek
2003-02-11T10:50:33Z

Hi!

> The design I proposed is to have multiple I/O queues, where to apply the
> elevator, and to choose the queue in function of the task->pid that is
> sumbitting the bh/bio. You'll have to apply an hash to the pid and you
> probably want a perturbation timer that will change the hash function
> every 30 sec or so. Plus I want a special queue for everything
> asynchronoys. So that the asynchronoys queue will be elevated and

What about adding speicial queue (queues?) for niced things? That way
nice -20 job would not interfere with normal processes, not even for
I/O.
Pavel
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