Messages in this thread |  | | | Date | Thu, 22 Jul 2004 20:08:21 +0200 | | From | Ingo Molnar <> | | Subject | Re: voluntary-preempt I0: sluggish feel |
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* Ingo Molnar <mingo@elte.hu> wrote:
> > Oh, sorry for the noise. It was the NVIDIA driver. The open one works > > much better with the I0 patch. > > i can reproduce this and i dont have the NVIDIA driver. When logging > in over the network then shell output is chunky with a setting of 2 > (softirq redirection), shell output is smooth with a value of 1.
found the reason: ksoftirqd runs at priority 19 by default and this causes batching and some softirq starvation. Does the sluggishness go away if you do 'renice -10 2' [where '2' is the PID of ksoftirqd]?
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