On Wed, Jul 22, 2020 at 10:03 AM Thomas Munro <thomas.munro@gmail.com> wrote:
>
> On Wed, Jul 22, 2020 at 3:57 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
> > Yeah, that is true but every time before the test the same amount of
> > data should be present in shared buffers (or OS cache) if any which
> > will help in getting consistent results. However, it is fine to
> > reboot the machine as well if that is a convenient way.
>
> We really should have an extension (pg_prewarm?) that knows how to
> kick stuff out PostgreSQL's shared buffers and the page cache
> (POSIX_FADV_DONTNEED).
>
+1. Such an extension would be quite helpful for performance benchmarks.
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com