Hi Wenhui, Baohong,
> Please consider adding benchmark results from at least one non-Intel
> platform.
I benchmarked your v1 on AWS Graviton (Arm Neoverse N1/V1/V2/V3) on top
of postgres master f7cc6fd760: ran pgbench with 3 different workloads
over various machine sizes and client counts. I measured up to 59%
higher peak throughput on 192-core V3, up to 14% on 192-core V2, and no
change or regressions on small systems.
Result details can be found in these plots:
https://github.com/harisokanovic/harismisc/tree/master/postgres/pgsqlscaling/adaptiveSpinReads-bench-2026-09-18/
For context, I have also been trying to improve LWLockWaitListLock()
using futex-mutex, but so far this approach doesn't benchmark well on
x86_64 systems, and was conditioned on aarch64-only.
The futex-mutex variant:
https://www.postgresql.org/message-id/DM6PR18MB29081469262A7BBCE85220B3A8112%40DM6PR18MB2908.namprd18.prod.outlook.com
Regards,
Haris Okanovic
AWS Graviton
