Обсуждение: linux clusters and pgsql

hi,
can postgres be run on a linux cluster, and if so what are the performance 
and other issues - checked archives, but the only info is over a year old

kg

Kenneth Gonsalves wrote:
> hi, can postgres be run on a linux cluster, and if so what are the
> performance and other issues - checked archives, but the only info is
> over a year old

PG uses shared memory to communicate between backends. Even if your 
clustering technology can handle that, it's unlikely to be useful 
without exotic hardware. The main problem is bandwidth between the 
backends - they're not terribly independent, so you need a specialised 
backplane usually.

I think there is someone producing exotic hardware with a version called 
"clusgres" or similar. Not sure if anyone's seen one in the wild as it were.

--  Richard Huxton  Archonet Ltd