Re: Buffer locking is special (hints, checksums, AIO writes)

Andres Freund <andres@anarazel.de>

From: Andres Freund <andres@anarazel.de>

To: Heikki Linnakangas <hlinnaka@iki.fi>

Cc: Melanie Plageman <melanieplageman@gmail.com>, Matthias van de Meent <boekewurm+postgres@gmail.com>, pgsql-hackers@postgresql.org, Thomas Munro <thomas.munro@gmail.com>, Noah Misch <noah@leadboat.com>, Robert Haas <robertmhaas@gmail.com>, Michael Paquier <michael.paquier@gmail.com>

Date: 2025-12-18T23:39:00Z

Lists: pgsql-hackers

Attachments

v8-0001-bufmgr-Optimize-harmonize-LockBufHdr-LWLockWaitLi.patch (text/x-diff)

Hi,

On 2025-12-18 17:06:43 -0500, Andres Freund wrote:
> I'll try to come up with a combined patch that applies the optimizations in
> LWLockWaitListLock() and LockBufHdr() to each other.

Attached is a rebased version of this patch series, with the above patch as
0001.

The later patches have a lot, but not yet all, of Melanie's feedback
addressed. I mainly am sending them because cfbot wanted a rebase anyway.

I'm mainly not yet happy with how 0007 changes buf_internals.h, some more
comment work is also needed. 0009 & 0010 still are more for POC than ready to
be in-depth reviewed.

Greetings,

Andres Freund