Robert Haas <robertmh...@gmail.com> writes: > On Fri, Jan 14, 2011 at 1:42 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: >> Um, yeah, I think you're having a problem keeping all the ideas straight >> ;-). The argument about forensics has to do with how soon we're willing >> to freeze tuples, ie replace the XID with a constant. Not about hint >> bits.
> Those things are related, though. Freezing sooner could be viewed as > an alternative to hint bits. Freezing sooner isn't likely to reduce I/O compared to hint bits. What that does is create I/O that you *have* to execute ... both in the pages themselves, and in WAL. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers