Re: Parallel WAL Archival Options

I do about 2-10 WALs per second.  I have a remote pgbackrest repo, and I do faster WAL archiving using the archive-async=y parameter, which enables WALs to be archived asynchronously, really speeding it up. I also increase the archive-push-queue-max=100GB.

For fetching the WALs, like when a standby gets behind and it needs to read WALs to catch up to get back into SR mode, I increase the size of the pgBackRest queue on the standby ( archive_get-queue-max = 100GB).

Both queue max parms are only enabled when archive-async is turned on.

Regards,
Michael Vitale


Nikhil Shetty wrote on 8/6/2023 6:56 AM:

Hi Michael,

May I know what is wal generation rate pm for you? I may give this a try.

Thanks,

Nikhil

On Sun, 6 Aug 2023 at 13:56, Michaeldba@sqlexec.com <Michaeldba@sqlexec.com> wrote:

I am using PGbackrest and I am generating many WALs per second too, and I have no problems keeping  up and I am backing them up remotely.

Sent from my iPad

> On Aug 6, 2023, at 3:43 AM, Nikhil Shetty <nikhil.dba04@gmail.com> wrote:
>
> Hi Team,
>
> I would like to know which backup&restore tools will be better for scenarios where the database is generating around 400 WALs per minute.
>
> We are using wal-g but it is not able to keep pace with the wal generation. We increased the upload streams to 256 but no luck
>
> Thanks,
> Nikhil

Regards,

Michael Vitale

Michaeldba@sqlexec.com

703-600-9343