[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Prefetches in buffer_zero_*
|
From: |
Dr. David Alan Gilbert |
|
Subject: |
Prefetches in buffer_zero_* |
|
Date: |
Thu, 22 Jul 2021 11:02:14 +0100 |
|
User-agent: |
Mutt/2.0.7 (2021-05-04) |
Hi Richard,
I think you were the last person to fiddle with the prefetching
in buffer_zero_avx2 and friends; Joe (cc'd) wondered if explicit
prefetching still made sense on modern CPUs, and that their hardware
generally figures stuff out better on simple increments.
What was your thinking on this, and did you actually measure
any improvement?
Dave
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
- Prefetches in buffer_zero_*,
Dr. David Alan Gilbert <=