Messages in this thread | | | Subject | Re: irqpoll kernel option hurts performance? | From | Alan Cox <> | Date | Fri, 03 Nov 2006 11:52:04 +0000 |
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Ar Iau, 2006-11-02 am 21:37 -0800, ysgrifennodd xp newbie: > specified the "irqpoll" option to boot the installation CD, is the > system doomed to always work in "IRQ polling mode" (which is much more > CPU wasteful if I understand this correctly)? Am I really using my > hardware now in less than optimal manner (like in PIO vs. DMA, for > example)?
irqpoll has a small impact, how big depends what the box does (on a gigabit network firewall its bad news, on a typical desktop its not measurable).
IRQ problems of the form you report can arise from a couple of places - one is vendors getting IRQ routing tables wrong (suprisingly common), the other may be a Linux bug.
Checking for a BIOS update may therefore be useful.
Is this a VIA chipset machine ?
Alan
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