On 1/19/17 9:53 AM, Stephen Frost wrote: > Sure, but we're talking about replaying WAL vs. doing a checkpoint, not > about writing WAL vs. replaying WAL. Replaying WAL and doing a > checkpoint both require writing to lots of different places across the > filesystem, of course.
Yeah, but they are each doing different things, so you can't say that one will take the same amount of time or strictly less than the other. It might be a good first estimation, but my practical experience is that it's not when it really matters. :-/ -- Peter Eisentraut http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers