On Mon, 2011-12-19 at 07:50 -0500, Robert Haas wrote: > I > think it would be regrettable if everyone had to give up 4 bytes per > page because some people want checksums.
I can understand that some people might not want the CPU expense of calculating CRCs; or the upgrade expense to convert to new pages; but do you think 4 bytes out of 8192 is a real concern? (Aside: it would be MAXALIGNed anyway, so probably more like 8 bytes.) I was thinking we'd go in the other direction: expanding the header would take so much effort, why not expand it a little more to give some breathing room for the future? Regards, Jeff Davis -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers