Re: APIC error on CPUx

Andi Kleen
2006-05-22T14:51:06Z

> "noapic" is a perfectly reasonable thing to use if you don't
> have a lot of interrupt sources and there is no more sharing
> in PIC mode than IOAPIC mode.

It makes interrupt handling much slower. The PIC accesses can be > 50%
of the interrupt handling cost.

Of course that tends to hide some bugs.

-Andi