| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Josh Berkus <josh(at)agliodbs(dot)com> |
| Cc: | Grzegorz Parka <grzegorz(dot)parka(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: GSoC idea - Simulated annealing to search for query plans |
| Date: | 2015-02-27 01:23:33 |
| Message-ID: | 8389.1425000213@sss.pgh.pa.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Josh Berkus <josh(at)agliodbs(dot)com> writes:
> On 02/26/2015 01:59 PM, Grzegorz Parka wrote:
>> I'm interested in one of old TODO items related to the optimizer -
>> 'Consider compressed annealing to search for query plans'.
> You might look at the earlier attempt to make the GEQO replacement
> "pluggable". That project failed to complete sufficiently to be a
> feature though, but it did enough to show that our current GEQO
> implementation was suboptimal.
> I'm currently searching for this project ... it was a GSOC project, but
> I think before they required posting to Google Code.
I seem to recall somebody demo'ing a simulated-annealing GEQO replacement
at PGCon a couple years back. It never got to the point of being a
submitted patch though.
regards, tom lane
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Andres Freund | 2015-02-27 01:27:52 | Re: GSoC idea - Simulated annealing to search for query plans |
| Previous Message | Josh Berkus | 2015-02-27 01:20:22 | Re: GSoC idea - Simulated annealing to search for query plans |