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    SubjectRe: [Lse-tech] Re: ext3 performance bottleneck as the number of spindles gets large
    >> On Sun, Jun 23, 2002 at 12:00:01AM -0600, Christopher E. Brown wrote:
    >>> However, multiple busses are *rare* on x86. There are alot of chained
    >>> busses via PCI to PCI bridge, but few systems with 2 or more PCI
    >>> busses of any type with parallel access to the CPU.

    William Lee Irwin III wrote:
    >> NUMA-Q has them.


    On Sun, Jun 23, 2002 at 12:29:23AM -0700, Dave Hansen wrote:
    > Yep, 2 independent busses per quad. That's a _lot_ of busses when you
    > have an 8 or 16 quad system. (I wonder who has one of those... ;)
    > Almost all of the server-type boxes that we play with have multiple
    > PCI busses. Even my old dual-PPro has 2.

    I thought I saw 3 PCI and 1 ISA per-quad., but maybe that's the
    "independent" bit coming into play.


    Cheers,
    Bill
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