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Gvozden Neskovic ae25d22235 Add RAID-Z routines for SSE2 instruction set, in x86_64 mode. 
The patch covers low-end and older x86 CPUs.  Parity generation is
equivalent to SSSE3 implementation, but reconstruction is somewhat
slower.  Previous 'sse' implementation is renamed to 'ssse3' to
indicate highest instruction set used.

Benchmark results:
scalar_rec_p                    4    720476442
scalar_rec_q                    4    187462804
scalar_rec_r                    4    138996096
scalar_rec_pq                   4    140834951
scalar_rec_pr                   4    129332035
scalar_rec_qr                   4    81619194
scalar_rec_pqr                  4    53376668

sse2_rec_p                      4    2427757064
sse2_rec_q                      4    747120861
sse2_rec_r                      4    499871637
sse2_rec_pq                     4    522403710
sse2_rec_pr                     4    464632780
sse2_rec_qr                     4    319124434
sse2_rec_pqr                    4    205794190

ssse3_rec_p                     4    2519939444
ssse3_rec_q                     4    1003019289
ssse3_rec_r                     4    616428767
ssse3_rec_pq                    4    706326396
ssse3_rec_pr                    4    570493618
ssse3_rec_qr                    4    400185250
ssse3_rec_pqr                   4    377541245

original_rec_p                  4    691658568
original_rec_q                  4    195510948
original_rec_r                  4    26075538
original_rec_pq                 4    103087368
original_rec_pr                 4    15767058
original_rec_qr                 4    15513175
original_rec_pqr                4    10746357

Signed-off-by: Gvozden Neskovic <neskovic@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #4783
2016-07-13 10:24:55 -07:00
..
arc_summary Make arc_summary.py and dbufstat.py compatible with python3 2016-01-07 17:09:59 -08:00
arcstat Update arcstat.py to remove deprecated rmis reference. 2015-12-04 15:28:45 -08:00
dbufstat Make arc_summary.py and dbufstat.py compatible with python3 2016-01-07 17:09:59 -08:00
fsck_zfs Add /sbin/fsck.zfs helper 2013-01-09 16:54:58 -08:00
mount_zfs Make zfs mount according to relatime config in dataset 2016-04-05 18:55:59 -07:00
raidz_test Add RAID-Z routines for SSE2 instruction set, in x86_64 mode. 2016-07-13 10:24:55 -07:00
vdev_id Add extra keyword 'slot' to vdev_id.conf 2015-08-30 10:03:56 -07:00
zdb OpenZFS 6314 - buffer overflow in dsl_dataset_name 2016-06-28 13:47:03 -07:00
zed Ensure zed _finish_daemonize() leaves fds 0-2 open 2016-03-08 17:46:41 -08:00
zfs OpenZFS 6314 - buffer overflow in dsl_dataset_name 2016-06-28 13:47:03 -07:00
zhack OpenZFS 6314 - buffer overflow in dsl_dataset_name 2016-06-28 13:47:03 -07:00
zinject Fix minor spelling mistakes 2016-06-06 14:45:26 -07:00
zpios Fix minor spelling mistakes 2016-06-06 14:45:26 -07:00
zpool Add zfs allow and zfs unallow support 2016-06-07 09:16:52 -07:00
zstreamdump OpenZFS 2605, 6980, 6902 2016-06-28 13:47:02 -07:00
ztest OpenZFS 6314 - buffer overflow in dsl_dataset_name 2016-06-28 13:47:03 -07:00
zvol_id OpenZFS 6314 - buffer overflow in dsl_dataset_name 2016-06-28 13:47:03 -07:00
Makefile.am SIMD implementation of vdev_raidz generate and reconstruct routines 2016-06-21 09:27:26 -07:00