Horton

Re: Checkpointer write combining

Nazir Bilal Yavuz <byavuz81@gmail.com>

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From: Nazir Bilal Yavuz <byavuz81@gmail.com>
To: Melanie Plageman <melanieplageman@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>, Andres Freund <andres@anarazel.de>
Date: 2025-09-09T13:27:47Z
Lists: pgsql-hackers 
Hi,

Thank you for working on this!

On Tue, 9 Sept 2025 at 02:44, Melanie Plageman
<melanieplageman@gmail.com> wrote:
>
> On Tue, Sep 2, 2025 at 5:10 PM Melanie Plageman
> <melanieplageman@gmail.com> wrote:
> >
> > The attached patchset implements checkpointer write combining -- which
> > makes immediate checkpoints at least 20% faster in my tests.
> > Checkpointer achieves higher write throughput and higher write IOPs
> > with the patch.

I did the same benchmark you did and I found it is %50 faster (16
seconds to 8 seconds).