Re: PCI-MSI-edge in /proc/interrupts
On Mon, 08 Aug 2011, Camaleón wrote:
> On Mon, 08 Aug 2011 17:57:49 +0900, J.Hwan Kim wrote:
> > When I read /proc/interrupts, it displays interrupt type of my ethernet
> > card with "PCI-MSI-edge".
> Mmm, I get two modes for each of my ethernet devices:
> sm01@stt008:~$ grep -i eth /proc/interrupts
> 20: 1 0 0 0 IO-APIC-fasteoi eth1
> 1276: 104018 104203 104044 103894 PCI-MSI-edge eth0
> I wonder what's the difference between those two :-?
Basically, MSI and MSI-X scale a lot better and are faster to process.
They're device-specific (and often device-function-specific), so they're
never shared with other devices.
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