Re: Real-Time Preemption, -RT-2.6.12-final-V0.7.50-24

K.R. Foley
2005-07-12T14:48:05Z

Ingo Molnar wrote:
> * Daniel Walker <dwalker@mvista.com> wrote:
>
>
>>I observed a situation on a dual xeon where IOAPIC_POSTFLUSH , if on,
>>would actually cause spurious interrupts. It was odd cause it's
>>suppose to stop them .. If there was a lot of interrupt traffic on one
>>IRQ , it would cause interrupt traffic on another IRQ. This would
>>result in "nobody cared" messages , and the storming IRQ line would
>>get shutdown.
>>
>>This would only happen in PREEMPT_RT .
>
>
> does it happen with the latest kernel too? There were a couple of things
> broken in the IOAPIC code in various earlier versions.
>
> Ingo

Is this why I have been able to boot the latest versions without the
noapic option (and without noticeable keyboard repeat problems) or has
it just been dumb luck?

--
kr