On 2016-04-16 16:44:52 -0400, Noah Misch wrote: > That is more controversial than the potential ~2% regression for > old_snapshot_threshold=-1. Alvaro[2] and Robert[3] are okay releasing > that way, and Andres[4] is not.
FWIW, I could be kinda convinced that it's temporarily ok, if there'd be a clear proposal on the table how to solve the scalability issue around MaintainOldSnapshotTimeMapping(). Postponing the optimization around something as trivial as a spinlock around reading an LSN is one thing, postponing something we don't know the solution to is anohter. Andres -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
