Robert Haas wrote: > On Tue, Mar 21, 2017 at 10:01 AM, Amit Kapila <amit.kapil...@gmail.com> wrote:
> > Sure, we can try that. I think we need to try it with > > synchronous_commit = off, otherwise, WAL writes completely overshadows > > everything. > > synchronous_commit = off is a much more realistic scenario than fsync = off. Sure, synchronous_commit=off is a reasonable case. But I say if we lose a few % on the case where you update only the first indexed of a large number of very wide columns all indexed, and this is only noticeable if you don't write WAL and only if you update all the rows in the table, then I don't see much reason for concern. -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
