On Fri, Oct 3, 2014 at 02:07:45PM -0400, Bruce Momjian wrote: > On Fri, Oct 3, 2014 at 03:00:56PM -0300, Arthur Silva wrote: > > I remember Informix had a setting that had no description except "try > > different values to see if it helps performance" --- we don't want to do > > that. > > > > What if we emit a server message if the setting is too low? That's how > > we handle checkpoint_segments. > > > > Not all GUC need to be straight forward to tune. > > If the gains are worthy I don't see any reason not to have it. > > Every GUC add complexity to the system because people have to understand > it to know if they should tune it. No GUC is zero-cost.
Please see my blog post about the cost of adding GUCs: http://momjian.us/main/blogs/pgblog/2009.html#January_10_2009 -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + Everyone has their own god. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers