Re: [patch[ Simple Topology API

From: Rik van Riel (riel@conectiva.com.br)
Date: Tue Jul 16 2002 - 07:59:14 EST


On 16 Jul 2002, Eric W. Biederman wrote:
> Sandy Harris <pashley@storm.ca> writes:

> > I/O -- A ------ B ------ E ------ G -- I/O
> > | | | |
> > | | | |
> > I/O -- C ------ D ------ F ------ H -- I/O
>
> > I suspect latency may become an issue when more than one link is
> > involved and there can be contention.
>
> I think the 8-way topology is a little more interesting than
> presented. But if not it does look like you can run into issues.

IIRC

    I/O -- A ------ B ------ E ------ G -- I/O
           | \ / |
           | \ / |
           | XX |
           | / \ |
           | / \ |
    I/O -- C ------ D ------ F ------ H -- I/O

Where B is connected to F and D to E. Obviously this
setup has a maximum hop count of 3 from any cpu to any
other cpu, as opposed to a maximum hop count of 4 for
the simple ladder.

regards,

Rik

-- 
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