Re: tweaking NTUP_PER_BUCKET

On 11 July 2014 18:25, Tomas Vondra <tv@fuzzy.cz> wrote:

> Turns out getting this working properly will quite complicated.

Lets keep this patch simple then. Later research can be another patch.

In terms of memory pressure, having larger joins go x4 faster has a
much more significant reducing effect on memory pressure than anything
else. So my earlier concerns seem less of a concern.

So lets just this change done and then do more later.

-- Simon Riggs                   http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training & Services