Re: open items for 9.4

Andres Freund <andres@2ndquadrant.com> writes:
> On 2014-09-29 14:44:42 -0400, Tom Lane wrote:
>> Personally I think a hardwired #define should be plenty.  What's the
>> argument that users will need to tune this at runtime?

> That right now it can make quite noticeable differences in
> scalability. And we have not much data to justify 8 as the default. And
> that's surely not going to change if we require recompiles.

I wonder why it's a fixed constant at all, and not something like
"wal_buffers / 8".
        regards, tom lane