Re: Recommended value for pg_test_fsync

Hi Bruce,

Thank you. We may stick with fdatasync for now.

Thanks and regards,
Nikhil

On Tue, Jun 30, 2020 at 8:54 PM Bruce Momjian <bruce(at)momjian(dot)us> wrote:

> On Tue, Jun 30, 2020 at 10:32:13AM +0530, Nikhil Shetty wrote:
> > Hi Bruce,
> >
> > Based on pg_test_fsync results, should we choose open_datasync or
> fdatasync as
> > wal_sync_method? Can we rely on pg_test_fsync for choosing the best
>
> I would just pick the fastest method, but if the method is _too_ fast,
> it might mean that it isn't actually writing to durable storage.
>
> > wal_sync_method or is there any other way?
>
> pg_test_fsync is the only way I know of, which is why I wrote it.
>
> --
> Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
> EnterpriseDB https://enterprisedb.com
>
> The usefulness of a cup is in its emptiness, Bruce Lee
>
>