Re: Random note of encouragement

I've actually just tested this on 9.3 - and I get roughly the same as
9.6devel.

Now going back to make sure my 9.5 environment is sane.

Hopefully this isn't me jumping the gun.

Cheers,

James Sewell,
PostgreSQL Team Lead / Solutions Architect
______________________________________

Level 2, 50 Queen St, Melbourne VIC 3000

*P *(+61) 3 8370 8000 *W* www.lisasoft.com *F *(+61) 3 8370 8099

On Thu, Feb 25, 2016 at 10:50 AM, Thomas Munro <
thomas(dot)munro(at)enterprisedb(dot)com> wrote:

> On Thu, Feb 25, 2016 at 12:26 PM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> > On Thu, Feb 25, 2016 at 10:06:34AM +1100, James Sewell wrote:
> >> Now when I run the following SQL (multiple times to allow for getting
> >> everything into shared buffers, which is 4GB on my machine):
> >>
> >>
> >> select sum(count_n) from base group by view_time_day;
> >>
> >>
> >> I get the following results:
> >>
> >>
> >> PSQL 9.5 - ~21 seconds
> >> PSQL 9.6 devel - ~8.5 seconds
> >>
> >>
> >> I think that's pretty good!
> >>
> >> I know this is a devel release, things may change, blah blah. But still,
> >> something has changed for the better here!
> >
> > Wow, that is cool. Can anyone suggest which commit improved this?
>
> Since it sums numerics, maybe integer transition functions from commit
> 959277a4f579da5243968c750069570a58e92b38 helped?
>
> --
> Thomas Munro
> http://www.enterprisedb.com
>

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