| From: | Shaun Thomas <sthomas(at)peak6(dot)com> |
|---|---|
| To: | Greg Spiegelberg <gspiegelberg(at)gmail(dot)com> |
| Cc: | Marinos Yannikos <mjy(at)geizhals(dot)at>, <pgsql-performance(at)postgresql(dot)org>, Svetlin Manavski <svetlin(dot)manavski(at)gmail(dot)com> |
| Subject: | Re: is parallel union all possible over dblink? |
| Date: | 2011-06-29 19:38:24 |
| Message-ID: | 4E0B7F30.4090208@peak6.com |
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| Lists: | pgsql-performance |
On 06/29/2011 02:14 PM, Greg Spiegelberg wrote:
> Another alternative is to use GridSQL. I haven't used it myself but
> seen it in action on a large install with 4 backend databases. Pretty
> slick.
We actually demoed this as a proof of concept a while back. Even just
having two instances on the same machine resulted in linear improvements
in execution speed thanks to parallel query execution.
Setting it up is something of a PITA, though, and the metadata database
is completely arbitrary. You basically must use the GridSQL intermediate
layer if you ever want to see your data again. I wouldn't use it for
anything but a reporting database that can be reconstructed if necessary.
--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 800 | Chicago IL, 60604
312-676-8870
sthomas(at)peak6(dot)com
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