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Old 10-21-08, 04:17 PM   #17
mspiegle
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Join Date: Nov 2004
Posts: 12
Default Re: What better, PCI-X MSI or Wired IRQ? [177.80]

I just enabled them on my quadro:

$ grep MSI /proc/interrupts
504: 11901 11498 PCI-MSI-edge nvidia
505: 11918 12102 PCI-MSI-edge nvidia
506: 5442 5556 PCI-MSI-edge eth0
507: 5809 5869 PCI-MSI-edge ahci

Traditional interrupts also don't scale as well with multi-core systems (another reason MSI was created). MSI also has significantly less latency than traditional interrupts.

Mike
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