Re: pg_sequence catalog

andres@anarazel.de (Andres Freund) writes:
> On 2016-08-31 14:25:43 -0300, Alvaro Herrera wrote:
>> Yes, sure, we're still improving even if we stick to one-seq-per-bufpage,
>> but while we're at it, we could as well find a way to make it as best as
>> we can.  And allowing multiple seqs per page seems a much better
>> situation, so let's try to get there.

> It's not really that simple. Having independent sequence rows closer
> together will have its own performance cost.

You are ignoring the performance costs associated with eating 100x more
shared buffer space than necessary.
        regards, tom lane