Re: SLRU optimization - configurable buffer pool and partitioning the SLRU lock

x4mmm@yandex-team.ru

From: "Andrey M. Borodin" <x4mmm@yandex-team.ru>

To: tender wang <tndrwang@gmail.com>

Cc: Amul Sul <sulamul@gmail.com>, Dilip Kumar <dilipbalaut@gmail.com>, Alvaro Herrera <alvherre@alvh.no-ip.org>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>

Date: 2023-12-14T11:56:50Z

Lists: pgsql-hackers


> On 14 Dec 2023, at 16:32, tender wang <tndrwang@gmail.com> wrote:
> 
> enable -O2, only one  instruction:
> xor     eax, eax

This is not fast code.  This is how friendly C compiler suggests you that mask must be 127, not 128.


Best regards, Andrey Borodin.

Commits

Fix zeroing of pg_serial page without SLRU bank lock
- be2f07310063 17.0 landed
Fix misspelled assertions
- 0d3a71d0c8a7 17.0 landed
GUC table: Add description to computed variables
- 30b8d6e4ce11 17.0 landed
Improve performance of subsystems on top of SLRU
- 53c2a97a9266 17.0 landed
Rename SLRU elements in view pg_stat_slru
- bcdfa5f2e2f2 17.0 landed
Use atomic access for SlruShared->latest_page_number
- d172b717c6f4 17.0 landed
Split use of SerialSLRULock, creating SerialControlLock
- 7b745d85b80d 17.0 landed
Index SLRUs by 64-bit integers rather than by 32-bit integers
- 4ed8f0913bfd 17.0 cited
Add a macro templatized hashtable.
- b30d3ea824c5 10.0 cited