Re: checkpoint_timout with no WAL activity

On Mon, Nov 7, 2016 at 4:20 PM, Tom DalPozzo <t.dalpozzo@gmail.com> wrote:
> Hi,
> I have:
> checkpoint_timeout = 2min
> wal_level = archive
> archive_mode=on
> archive_timeout = 30
>
> With NO dbase activity, I see the WAL being modified every 2min (and,
> consequently, one WAL file archived every 2min too ).
>
> Is it right? I read: "If no WAL has been written since the previous
> checkpoint, new checkpoints will be skipped even if checkpoint_timeout has
> passed."

I guess archive_timeout forcing to switch new WAL file, see this :
https://www.postgresql.org/docs/devel/static/runtime-config-wal.html#GUC-ARCHIVE-TIMEOUT

Regards,
Amul