----- Original Message -----
From: "Bruce Momjian" <pgman@candle.pha.pa.us>
To: <bruc@acm.org>
Cc: "Tom Lane" <tgl@sss.pgh.pa.us>; <pgsql-hackers@postgresql.org>
>
> We would have to understand how the SGI code is better than our existing
> code on SMP machines.
>
I've been searching for data from SGI's Origin presentation to illustrate
what am I saying, this graph only covers Memory bandwith, but take present
that as distance between nodes increase, memory access latency is also
increased: