Re: Linux 2.6.22-rc2

H. Peter Anvin
2007-05-22T17:55:56Z

Linus Torvalds wrote:
>
> I can't really see that being a real problem in this day and age of PCI-X
> etc, but it _used_ to be a possible issue a decade ago. Maybe you've found
> a case where it matters even on modern hardware? We occasionally used to
> set the PCI latency timer to make people happy.
>
> (Not that I'm convinced it even has any semantic meaning on a modern PCI
> system..)
>

The PCI latency counters matter as long as you're talking a PCI or PCI-X
bus. It matters not one iota on anything that pretends to be a PCI bus
but isn't, i.e. PCI Express, HyperTransport, etc.

-hpa