| From: | Andres Freund <andres(at)2ndquadrant(dot)com> |
|---|---|
| To: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com> |
| Cc: | Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>, Mitsumasa KONDO <kondo(dot)mitsumasa(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: gaussian distribution pgbench |
| Date: | 2014-07-03 12:32:17 |
| Message-ID: | 20140703123217.GH25909@awork2.anarazel.de |
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| Thread: | |
| Lists: | pgsql-hackers |
On 2014-07-03 21:27:53 +0900, Fujii Masao wrote:
> > Add drawing random integers with a Gaussian or truncated exponentional
> > distributions to pgbench.
> >
> > Test variants with these distributions are also provided and triggered
> > with options "--gaussian=..." and "--exponential=...".
>
> IIRC we've not reached consensus about whether we should support
> such options in pgbench. Several hackers disagreed to support them.
Yea. I certainly disagree with the patch in it's current state because
it copies the same 15 lines several times with a two word
difference. Independent of whether we want those options, I don't think
that's going to fly.
> OTOH, we've almost reached the consensus that supporting gaussian
> and exponential options in \setrandom. So I think that you should
> separate those two features into two patches, and we should apply
> the \setrandom one first. Then we can discuss whether the other patch
> should be applied or not.
Sounds like a good plan.
Greetings,
Andres Freund
--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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