On 18 August 2015 at 18:46, Andres Freund <and...@anarazel.de> wrote:
> ISTM that it's not too hard to > a) make archive_mode PGC_SIGHUP > b) make wal_level PGC_SIGHUP > +1 > c) automatically increase wal_level to logical whenever a logical > replication slot is defined > -1 It would be easier to just have wal_level = logical always, but allow it to be set lower if desired. Increasing wal_level dynamically might otherwise happen too late. > it seems considerably harder to > > d) make max_wal_senders PGC_SIGHUP > e) make max_replication_slots PGC_SIGHUP > > because they need shmem, locks, and everything. > > > Therefore I propose something slightly different: > > We change the default of max_wal_senders, max_replication_slots, to some > reasonably high setting Agreed, I suggest 8 as the default for each. -- Simon Riggs http://www.2ndQuadrant.com/ <http://www.2ndquadrant.com/> PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
