| From: | Richard Huxton <dev(at)archonet(dot)com> |
|---|---|
| To: | Kenneth Gonsalves <lawgon(at)thenilgiris(dot)com> |
| Cc: | pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: linux clusters and pgsql |
| Date: | 2004-12-21 11:16:44 |
| Message-ID: | 41C8061C.10700@archonet.com |
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| Thread: | |
| Lists: | pgsql-sql |
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
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