On Wed, Sep 12, 2012 at 7:00 PM, Jeff Janes <jeff.janes@gmail.com> wrote:
> Regarding the wiki page on reporting slow queries:
> We currently recommend EXPLAIN ANALYZE over just EXPLAIN. Should we
> recommend EXPLAIN (ANALYZE, BUFFERS) instead? I know I very often
> wish I could see that data. I don't think turning buffer accounting
> on adds much cost over a mere ANALYZE.
Given the amount of version 8 installs out there the recommendation
should be qualified with version >9.0. Otherwise a strong +1
> Also, an additional thing that would be nice for people to report is
> whether long running queries are CPU bound or IO bound. Should we add
> that recommendation with links to how to do that in a couple OS, say,
> Linux and Windows. If so, does anyone know of good links that explain
> it for those OS?
I don't have any links for OS level monitoring, but with version 9.2
track_io_timing would do the job.
Ants Aasma
--
Cybertec Schönig & Schönig GmbH
Gröhrmühlgasse 26
A-2700 Wiener Neustadt
Web: http://www.postgresql-support.de
