Re: PGbackrest very slow!

Hi,

Kindly try changing below mentioned parameters.

Parallel-process=      -- based on the CPU CORE
compress-type=lz4
compress-level=       -- based on the CPU CORE

Thanks & Regards

Dinesh Nair

---

From: Pär Mattsson <par.x.mattsson@gmail.com>
Sent: Thursday, October 23, 2025 7:21 PM
To: Scott Ribe <scott_ribe@elevated-dev.com>
Cc: pgsql-admin <pgsql-admin@postgresql.org>
Subject: Re: PGbackrest very slow!

 

You don't often get email from par.x.mattsson@gmail.com. Learn why this is important

Caution: This email was sent from an external source. Please verify the sender’s identity before clicking links or opening attachments.

Thanks I will test that!

Br Pär

Mvh Pär

---

Från: Scott Ribe <scott_ribe@elevated-dev.com>
Skickat: Thursday, October 23, 2025 3:14:20 PM
Till: Pär Mattsson <par.x.mattsson@gmail.com>
Kopia: pgsql-admin <pgsql-admin@postgresql.org>
Ämne: Re: PGbackrest very slow!

 

> On Oct 23, 2025, at 2:59 AM, Pär Mattsson <par.x.mattsson@gmail.com> wrote:
>
> ...
> The backup of 50GB took 40 min.
> It is not a network issue. I tested to transfer 2GB between two host and it took 4 sec.
>
> I think backup-standby=y slows down the backup out of all minds.
>
> Br Pär

pgbackrest defaults to gzip compression, which is slow--try lz4 and see what happens