| From: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
|---|---|
| To: | Magnus Hagander <magnus(at)hagander(dot)net> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> |
| Subject: | Re: Replication/backup defaults |
| Date: | 2017-01-04 19:44:27 |
| Message-ID: | 2b4f2034-ba7e-ab11-670e-91c9db7bb1ee@2ndquadrant.com |
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| Lists: | pgsql-hackers |
On 1/4/17 9:46 AM, Magnus Hagander wrote:
> How about we default max_replication_slots to -1, which means to use the
> same value as max_wal_senders?
> But you don't necessarily want to adjust them together, do you? They are
> both capped by max_connections, but I don't think they have any other
> direct relation between each other?
I think the most usual case is that you use approximately one
replication slot per wal sender slot. So it would be a good default to
make them equal.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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