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(dot)x(dot)mattsson(at)gmail(dot)com>
Sent: Thursday, October 23, 2025 7:21 PM
To: Scott Ribe <scott_ribe(at)elevated-dev(dot)com>
Cc: pgsql-admin <pgsql-admin(at)postgresql(dot)org>
Subject: Re: PGbackrest very slow!

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Thanks I will test that!
Br Pär

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

> On Oct 23, 2025, at 2:59 AM, Pär Mattsson <par(dot)x(dot)mattsson(at)gmail(dot)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