| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Greg Stark <gsstark(at)mit(dot)edu>, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: *_collapse_limit, geqo_threshold |
| Date: | 2009-07-07 17:56:15 |
| Message-ID: | 200907071956.15604.andres@anarazel.de |
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| Lists: | pgsql-hackers |
On Tuesday 07 July 2009 19:45:44 Tom Lane wrote:
> Greg Stark <gsstark(at)mit(dot)edu> writes:
> > We should benchmark the planner on increasingly large sets of
> > relations on a typical developer machine and set geqo to whatever
> > value the planner can handle in that length of time. I suspect even at
> > 10s you're talking about substantially larger values than the current
> > default.
> The problem is to find some realistic "benchmark" cases. That's one
> reason why I was pestering Andreas to see his actual use cases ...
I will start writing a reduced/altered schema tomorrow then...
Andres
PS: Its "Andres" btw ;-)
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