Re: SMP interrupt wierdness in Linux 2.6.8.1 - Interrupt Load Balancing not working

Just putting this on the list for everybody,
since it was useful for me.

Le dim 07/11/2004 à 19:24, Alexander Rauth a écrit :
> Am Sonntag, den 07.11.2004, 14:12 +0100 schrieb NOULARD Eric:
> > I just compiled and booted 2.6.9
> > the result is almost identical interrupt seems to 
> > goes only to CPU0 (excepted some of them ??)
> > 
> > My kernel config says:
> > CONFIG_IRQBALANCE=y
> 
> http://people.redhat.com/arjanv/irqbalance/
> 
> Do you have irqbalance user-space tool installed and set up during
> boot??
> 
> Alex

As i said in a previous private e-mail
I still wonder why we need a user-space tool to do irq
balancing??

Or "Johan Kullstam" has the answer:

the normal kernel IRQ 'balancing' 
(without irqbalance user land tool
 and with smp_affinity set to 0xffffffff)

tends to keep IRQ to be treated with the same
CPU even if it "may" go to others...

-- 
Eric NOULARD
E-mail: [email protected]