On Mon, 27 Jul 2009, Dave Youatt wrote:
> Greg, those are compelling numbers for the new Nehalem processors.
> Great news for postgresql. Do you think it's due to the new internal
> interconnect...
Unlikely. Different threads on the same CPU core share their resources, so
they don't need an explicit communication channel at all (I'm simplifying
massively here). A real interconnect is only needed between CPUs and
between different cores on a CPU, and of course to the outside world.
Scott's explanation of why SMT works better now is much more likely to be
the real reason.
Matthew
--
Ozzy: Life is full of disappointments.
Millie: No it isn't - I can always fit more in.