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| author | Colin Percival <cperciva@FreeBSD.org> | 2016-05-29 17:26:40 +0000 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2022-09-08 16:14:56 +0200 |
| commit | 4ebb5f893ed4d8744671aac6a95c625e93135d94 (patch) | |
| tree | b71b83f55843248116ae718c42f9af584e086f2b /cpukit/include/sha512t.h | |
| parent | Implement SHA-512 truncated (224 and 256 bits) (diff) | |
| download | rtems-4ebb5f893ed4d8744671aac6a95c625e93135d94.tar.bz2 | |
Retune SHA2 code for improved performance on CPUs
with more ILP and a preference for memory load instructions over large code
footprints with embedded immediate variables.
On amd64 CPUs from 2007-2008 there is not a significant change, but
amd64 CPUs from 2009-2010 get roughly 10% more throughput with this
code; amd64 CPUs from 2011-2012 get roughly 15% more throughput; and
AMD64 CPUs from 2013-2015 get 20-25% more throughput. The Raspberry
Pi 2 increases its throughput by 6-8%.
Sponsored by: Tarsnap Backup Inc.
Performance tested by: allanjude
MFC after: 3 weeks
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions