On Fri, Oct 3, 2014 at 03:30:35PM -0300, Arthur Silva wrote:
> > 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
>
> That's true Bruce (nice post, it was a good reading).
> But how can we ignore 25%+ improvements (from 8 to 24)?
> At very least we should delivery some pretty good defaults.
Well, checkpoint_segments was a similar case where we couldn't give good
tuning advice so we went with a server log file warning if it needed to
be increased --- this might be a similar case.
-- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB
http://enterprisedb.com
+ Everyone has their own god. +