| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
| Cc: | Magnus Hagander <magnus(at)hagander(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Defaults for replication/backup |
| Date: | 2016-02-13 13:39:47 |
| Message-ID: | 20160213133947.GB29473@awork2.anarazel.de |
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| Lists: | pgsql-hackers |
On 2016-02-13 22:37:33 +0900, Michael Paquier wrote:
> On Sat, Feb 13, 2016 at 10:15 PM, Magnus Hagander wrote:
> > So, I suggest the following changes to the defaults:
> > wal_level=hot_standby
> > max_wal_senders=10
> > max_replication_slots=10
+1. I'm inclined to set slots a bit higher than senders. They're pretty
cheap...
I think this is way past due.
> 10 seems a bit high. I would think that max_wal_senders and
> max_replication_slots set at 3 are sufficient enough, giving enough
> room for simple deployments willing to use replication.
But they're relatively cheap to enable, so why set them low?
Andres
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