On Fri, Nov 6, 2015 at 2:47 AM, Michael Paquier <michael.paqu...@gmail.com> wrote: > I have as well thought a bit about adding a space-related constraint > on the standby snapshot generated by the bgwriter, so as to not rely > entirely on the interval of 15s. I finished with the attached that > uses a check based on CheckPointSegments / 8 to be sure that at least > this number of segments has been generated since the last checkpoint > before logging a new snapshot. I guess that's less brittle than the > last patch. Thoughts?
I can't see why that would be a good idea. My understanding is that the logical decoding code needs to get those messages pretty regularly, and I don't see why that need would be reduced on systems where CheckPointSegments is large. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers