Re: Perfomance degradation 9.3 (vs 9.2) for FreeBSD

On Tue, Apr 22, 2014 at 9:58 AM, Tatsuo Ishii <ishii(at)postgresql(dot)org> wrote:

> > * Tatsuo Ishii (ishii(at)postgresql(dot)org) wrote:
> >> I observe performance degradation with PostgreSQL 9.3 vs 9.2 on Linux
> >> as well. The hardware is HP DL980G7, 80 cores, 2TB mem, RHEL 6,
> >> pgbench is used (read only query), scale factor is 1,000 (DB size
> >> 15GB).
> >
> > Can you isolate the sysv-vs-mmap patch and see what happens with just
> > that change..?
>
> Unfortunately I don't have an access to the machine at this moment.
>
> >> Included is the graph (from PostgreSQL Enterprise Consortium's 2014
> >> report page 13: https://www.pgecons.org/downloads/43). I see up to 14%
> >> degration (at 128 concurrent users) comparing with 9.2.
> >
> > That URL returns 'Forbidden'...
>
> Sorry for this. I sent a problem report to the person in charge. In
> the mean time, please go to:
> https://www.pgecons.org/download/works_2013/ then click the link "2013
> 年度WG1活動報告" (sorry for not English). You should be able to
> download a report (PDF).
>
> Also the report is written in Japanese. I hope you can read at leat
> the graph in page 13 and the table in page 14.
>
Is pgecons planning to do a translation of that at some point? It looks
like good material, and the audience able to understand it is rather
limited now :)
--
Michael