Re: Proposal to add page headers to SLRU pages

Hello,

I suppose this is important to do if we ever want to move SLRUs into
shared buffers.  However, I wonder about the extra time this adds to
pg_upgrade.  Is this something we should be concerned about?  Is there
any measurement/estimates to tell us how long this would be?  Right now,
if you use a cloning strategy for the data files, the upgrade should be
pretty quick ... but the amount of data in pg_xact and pg_multixact
could be massive, and the rewrite is likely to take considerable time.

-- 
Álvaro Herrera         PostgreSQL Developer  —  https://www.EnterpriseDB.com/
"Las cosas son buenas o malas segun las hace nuestra opinión" (Lisias)