Re: Is pg_basebackup Performance Limited by Files Page Cache?

From: Alexandru Lazarev <alexandru(dot)lazarev(at)gmail(dot)com>
To: kaido vaikla <kaido(dot)vaikla(at)gmail(dot)com>, pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Re: Is pg_basebackup Performance Limited by Files Page Cache?
Date: 2025-03-26 21:17:00
Message-ID: CAL93h0EOvoXQjJAzRqEYZKjEyrMVg9wuKEx6GGShUmGKn0Q3BA@mail.gmail.com
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In my case culprit is Linux Kernel (Oracle Linux 9.2: RHCK 5.14 - issue
exists, after switched to UEK 5.15 Kernel issue disappears).
I did various tests with PG container and rsync too and even out of
container (launched rsync into a CgroupV2).

So now I guess it is a question to Linux Kernel communities in my case.
More details: https://www.reddit.com/r/linuxquestions/s/ADScolw76C

AlexL

On Wed, Mar 26, 2025, 21:16 kaido vaikla <kaido(dot)vaikla(at)gmail(dot)com> wrote:

> Hi,
> Did you get any feedback?
> I have suspected something similar.
>
> br
> Kaido
>

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