I rebuilt the latest Fedora 2 kernel update to enable preempt and IO-APIC. I'm not yet sure about preempt, but IO-APIC has been acting weird. It gave me more interrupts (up to 21 instead of 15), but the devices were distributed suboptimal. Without APIC, the nvidia module was alone on its own interrupt, the EMU10K1 was alone, the ide and eth modules were on separate interrupts, etc. Quite ok. With IO-APIC, nvidia, EMU10K1 and bttv were on the same interrupt, ide2, ide3 and eth0 were on the same interrupt. Instead of messing with the kernel again, i just rebooted with the "noapic" parameter and now the interrupts are looking good again. BTW, anyone has any measurements on how bad it is to put essential devices on the same interrupt? (in terms of xruns) -- Florin Andrei http://florin.myip.org/
