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From: Alexandru Lazarev <alexandru.lazarev@gmail.com>
Date: Wed, 26 Mar 2025 23:17:00 +0200
Message-ID: <CAL93h0EOvoXQjJAzRqEYZKjEyrMVg9wuKEx6GGShUmGKn0Q3BA@mail.gmail.com>
Subject: Re: Is pg_basebackup Performance Limited by Files Page Cache?
To: kaido vaikla <kaido.vaikla@gmail.com>, pgsql-general@lists.postgresql.org
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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.vaikla@gmail.com> wrote:

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

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<div dir=3D"auto"><div>In my case culprit is Linux Kernel (Oracle Linux 9.2=
: RHCK 5.14 - issue exists, after switched to UEK 5.15 Kernel issue disappe=
ars).<div dir=3D"auto">I did various tests with PG container and rsync too =
and even out of container (launched rsync into a CgroupV2).</div><div dir=
=3D"auto"><br></div><div dir=3D"auto">So now I guess it is a question to Li=
nux Kernel communities in my case.=C2=A0</div><div dir=3D"auto">More detail=
s:=C2=A0<a href=3D"https://www.reddit.com/r/linuxquestions/s/ADScolw76C">ht=
tps://www.reddit.com/r/linuxquestions/s/ADScolw76C</a></div><div dir=3D"aut=
o"><br></div><div dir=3D"auto">AlexL</div><br><br><div class=3D"gmail_quote=
 gmail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Mar 2=
6, 2025, 21:16 kaido vaikla &lt;<a href=3D"mailto:kaido.vaikla@gmail.com">k=
aido.vaikla@gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex=
"><div dir=3D"ltr"><div dir=3D"ltr"><div class=3D"gmail_default" style=3D"f=
ont-family:monospace,monospace">Hi,=C2=A0<br>Did you get any feedback? <br>=
I have suspected something similar.<br><br>br<br>Kaido</div></div></div>
</blockquote></div></div></div>

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