Tom Lane wrote:
> "Simon Riggs" <simon@2ndquadrant.com> writes:
>> It seems possible to vary both BLCKSZ and XLOGSEGSZ rather than have
>> them set within pg_config_manual.
>
> The work required for this is much larger than you make it out to be,
> and zero evidence has been offered for any benefit. I have not heard of
> anyone bothering to use a custom BLCKSZ since we added TOAST to get rid
> of the row-length limitation ...
I think, Configurable BLCKSZ could be useful for regression test. See
hash index problem. Some kind of stress test could be check behavior on
different BLCKSZ without recompilation.
Zdenek