Re: PGbackrest very slow!

Hi!

[global]

repo1-path=/postgresql/backup

repo1-retention-full=2

start-fast=y

process-max=4

When I deleted backup-standby=y and increased process-max=4 , then the
backup took 7 min of 50GB.

I will test all your tips! Thanks alot!

Br Pär

Den fre 24 okt. 2025 kl 04:15 skrev DINESH NAIR <
Dinesh_Nair(at)iitmpravartak(dot)net>:

> 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
> ------------------------------
> *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
>
>