Re: Setting effective_cache_size in integer form with the 8kb block units

Thanks all, good to know. Again, apologies for being daft!

On Wed, Jan 19, 2022 at 2:21 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:

> "David G. Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> writes:
> > On Wed, Jan 19, 2022 at 2:57 PM Wells Oliver <wells(dot)oliver(at)gmail(dot)com>
> wrote:
> >> It does. In a cruel twist of fate, RDS parameter groups do not allow
> >> "48GB" and want integer values.
>
> > The system operates and calculates memory in binary per the referenced
> > documentation so 6,291,456 (I double-checked this).
>
> If you don't trust hand arithmetic, try
>
> regression=# set effective_cache_size to '48GB';
> SET
> regression=# select setting from pg_settings where name =
> 'effective_cache_size';
> setting
> ---------
> 6291456
> (1 row)
>
> regards, tom lane
>

--
Wells Oliver
wells(dot)oliver(at)gmail(dot)com <wellsoliver(at)gmail(dot)com>