| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Cc: | Gianni Ciolli <gianni(dot)ciolli(at)2ndquadrant(dot)it>, Gabriele Bartolini <gabriele(dot)bartolini(at)2ndquadrant(dot)it>, Simon Riggs <simon(at)2ndquadrant(dot)com> |
| Subject: | Re: Bitmap Indexes: request for feedback |
| Date: | 2008-10-21 21:26:44 |
| Message-ID: | 200810211426.45179.josh@agliodbs.com |
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| Lists: | pgsql-hackers |
Gianni,
> me and Gabriele Bartolini have been working on Bitmap Indexes (BMI) in
> the last weeks, with advice and guidance from Simon Riggs. We feel
> that we are about to approach the point where it is appropriate to ask
> for feedback from this list.
The other major issue with the Bitmap index patch as it stood in 2007 was
that performance just wasn't that much faster than a btree, except for
specific corner cases. Otherwise, someone else would have been interested
enough to pick it up and finish it.
So performance testing of the patch is absolutely essential.
--
--Josh
Josh Berkus
PostgreSQL
San Francisco
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