zfs/man/man5
Romain Dolbeau 24cdeaf12e Fletcher4 algorithm implemented in pure NEON for Aarch64 / ARMv8 64 bits
This is not useful on micro-architecture with a weak NEON
implementation (only 64 bits); the native version is slower &
the byteswap barely faster than scalar.  On A53 or A57, it's
a small improvement on scalar but OK for byteswap.

Results from an A53 system:
0 0 0x01 -1 0 1499068294333000 1499101101878000
implementation   native         byteswap       
scalar           1008227510     755880264      
aarch64_neon     1198098720     1044818671     
fastest          aarch64_neon   aarch64_neon 

Results from a A57 system:
0 0 0x01 -1 0 4407214734807033 4407233933777404
implementation   native         byteswap       
scalar           2302071241     1124873346     
aarch64_neon     2542214946     2245570352     
fastest          aarch64_neon   aarch64_neon 

Reviewed-by: Gvozden Neskovic <neskovic@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Romain Dolbeau <romain.dolbeau@atos.net>
Closes #5248
2016-10-21 10:55:49 -07:00
..
Makefile.am Initial attempt to document events and payloads. 2014-07-25 11:58:36 -07:00
vdev_id.conf.5 Add extra keyword 'slot' to vdev_id.conf 2015-08-30 10:03:56 -07:00
zfs-events.5 Man page white space and spelling corrections 2015-12-18 13:33:37 -08:00
zfs-module-parameters.5 Fletcher4 algorithm implemented in pure NEON for Aarch64 / ARMv8 64 bits 2016-10-21 10:55:49 -07:00
zpool-features.5 Add support for user/group dnode accounting & quota 2016-10-07 09:45:13 -07:00