On Fri, Feb 18, 2005 at 02:39:49PM -0800, Martin J. Bligh wrote: > > > > there's something I don't understand: With IRQBALANCE *enabled* almost > > all interrupts are processed on CPU0. This changed in an unexpected way > > after disabling IRQBALANCE: now all interrupts are distributed uniformly > > to both CPUs. Maybe it's intentional, but it's not what I expect when a > > config option named IRQBALANCE is *disabled*. > > > > Can anybody comment on this? > > If you have a Pentium 3 based system, by default they'll round robin. > If you turn on IRQbalance, they won't move until the traffic gets high > enough load to matter. That's presumably what you're seeing.
It's an Athlon box that propably has the same behaviour. Just another question on this topic: with IRQBALANCE enabled, almost all interupts are routet to CPU0. Lately irq 0 runs on CPU1 and never returns to CPU0 - is there any obvious reason for that? -jo -- -rw-r--r-- 1 jo users 63 2005-02-18 23:29 /home/jo/.signature - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
