On Mon, 15 Oct 2018 09:46:47 +0200
Laurenz Albe <laurenz.albe@cybertec.at> wrote:
> Raghavendra Rao J S V wrote:
> > Is there any impact if "#wal_keep_segments = 0 " and "checkpoint_segments
> > = 128" postgresql.conf file. If yes,what is the imapct?
>
> Yes.
> - You will have fewer checkpoints requested by data modification activity.
> - Crash recovery might take longer.
And considering wal_keep_segments, there is no impact on perf/recovery. This
mostly related to the standby replication lag allowed and some other solutions
exists (slots, archiving).
