Re: [Lse-tech] Re: ext3 performance bottleneck as the number of spindles gets large

William Lee Irwin III
2002-06-23T07:37:32Z

>> 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