diff options
| author | Romain Dolbeau <[email protected]> | 2019-10-30 20:26:14 +0100 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2019-10-30 12:26:14 -0700 |
| commit | 0b2a642351f375cb9be3d2569a0ac0417340c741 (patch) | |
| tree | 5c5e58e318f33f44220293d35690314eaec85e7a /man/man5 | |
| parent | bae11ba8dc1dd992643dd0ab0b5cc3b3cc197fe9 (diff) | |
Add AVX512BW variant of fletcher
It is much faster than AVX512F when byteswapping on Skylake-SP
and newer, as we can do the byteswap in a single vshufb instead
of many instructions.
Reviewed by: Gvozden Neskovic <[email protected]>
Reviewed-by: Chunwei Chen <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Romain Dolbeau <[email protected]>
Closes #9517
Diffstat (limited to 'man/man5')
| -rw-r--r-- | man/man5/zfs-module-parameters.5 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/man/man5/zfs-module-parameters.5 b/man/man5/zfs-module-parameters.5 index c711f6de6..1c773435c 100644 --- a/man/man5/zfs-module-parameters.5 +++ b/man/man5/zfs-module-parameters.5 @@ -1507,7 +1507,7 @@ Default value: \fB20\fR% of \fBzfs_dirty_data_max\fR. Select a fletcher 4 implementation. .sp Supported selectors are: \fBfastest\fR, \fBscalar\fR, \fBsse2\fR, \fBssse3\fR, -\fBavx2\fR, \fBavx512f\fR, and \fBaarch64_neon\fR. +\fBavx2\fR, \fBavx512f\fR, \fBavx512bw\fR, and \fBaarch64_neon\fR. All of the selectors except \fBfastest\fR and \fBscalar\fR require instruction set extensions to be available and will only appear if ZFS detects that they are present at runtime. If multiple implementations of fletcher 4 are available, |