Re: Should kirqd work on HT?

[Nigel Cunningham <ncunningham@cyclades.com>]

Hi Jeff.

On Sat, 2005-02-19 at 17:52, Jeff Garzik wrote:
> Nigel Cunningham wrote:
> What are the results of running irqbalanced?

You mean the debugging output? I can reenable it and record the results
if that's what you mean.

>From memory though, it got to not_worth_the_effort via this code:

        if (tmp_loaded == -1) {
         /* In the case of small number of heavy interrupt sources,
          * loading some of the cpus too much. We use Ingo's original
          * approach to rotate them around.
          */
                if (!first_attempt && imbalance >= useful_load_threshold) {
                        rotate_irqs_among_cpus(useful_load_threshold);
                        return;
                }
                goto not_worth_the_effort;
        }


(arch/i386/kernel/io_apic.c:449.

Regards,

Nigel
-- 
Nigel Cunningham
Software Engineer, Canberra, Australia
http://www.cyclades.com

Ph: +61 (2) 6292 8028      Mob: +61 (417) 100 574