Thank you Luca,
Can I ask one more related question, I have no need for replication as noted below, can I safely disable the worker process via the setting below? In my sandbox it does turn off the logical replication launcher, I just wanted to be sure I am not affecting anything other than replication with this setting.
max_logical_replication_workers = 0 # taken from max_worker_processes
# (change requires restart)
Jason Ralph
-----Original Message-----
From: Luca Ferrari <fluca1978@xxxxxxxxx>
Sent: Wednesday, September 4, 2019 12:16 PM
To: Jason Ralph <jralph@xxxxxxxxxxxxxxxxxxxxx>
Cc: pgsql-general@xxxxxxxxxxxxxxxxxxxx
Subject: Re: PG11.2 - wal_level =minimal max_wal_senders = 0
On Wed, Sep 4, 2019 at 5:15 PM Jason Ralph <jralph@xxxxxxxxxxxxxxxxxxxxx> wrote:
> The question I have is, for a production database not doing replication, can I safely set the following parameters, I understand that minimal will also disable wal_archiving so I am concerned about that as well.
>
> wal_level = minimal
>
> max_wal_senders = 0
>
>
>
> I have been looking at the documentation and I guess I am looking for a yes this is ok, I figured it’s on by default for a reason so I was hesitant to change it.
I don't see why you should not set them as you described.
The idea is that the overhead of having replica over minimal is today enough "low" in contrast to the need for replication (e.g., backup tools like pgbackrest).
Luca
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