| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Dmitry Koterov <dmitry(at)koterov(dot)ru> |
| Cc: | Filip Rembiałkowski <plk(dot)zuber(at)gmail(dot)com>, Postgres General <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: How to speedup intarray aggregate function? |
| Date: | 2007-10-23 13:55:10 |
| Message-ID: | 20071023135509.GL5772@alvh.no-ip.org |
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| Lists: | pgsql-general |
Dmitry Koterov escribió:
> I have written in C all needed contrib functions: intarray.bidx() (binary
> search in sorted list) and intagg.int_agg_append_state (bufferized appending
> of one array to another without linear memory reallocation). The speed now
> is great: in one case with intersection of 100000 and 15000 arrays it become
> 30ms instead of 1600 ms (50 times faster).
>
> Few days later, after complex testing, I'll publish complete patches in
> pgsql-hackers maillist.
Did you already?
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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