Messages in this thread | | | Date | Fri, 28 Jan 2005 23:19:00 +0100 | From | Ingo Molnar <> | Subject | Re: [patch, 2.6.11-rc2] sched: RLIMIT_RT_CPU_RATIO feature |
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* Peter Williams <pwil3058@bigpond.net.au> wrote:
> I think part of the problem here is that by comparing each tasks limit > to the runqueue's usage rate (and to some extent using a relatively > short decay period) you're creating the need for the limits to be > quite large i.e. it has to be big enough to be bigger than the > combined usage rates of all the unprivileged real time tasks and also > to handle the short term usage rate peaks of the task.
actually, at least for Jackd use, the current average worked out pretty well - setting the limit 5-10% above that of the reported average CPU use gave a result that was equivalent to unrestricted SCHED_FIFO results.
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