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Add zfs_blake3_impl to zfs.4
The zfs module parameter zfs_blake3_impl got no manual page entry while adding BLAKE3 to OpenZFS. This commit adds the required notes about the parameter into zfs.4 Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Co-authored-by: Ryan Moeller <ryan@freqlabs.com> Signed-off-by: Tino Reichardt <milky-zfs@mcmilk.de> Closes #13725
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@ -1162,6 +1162,20 @@ Selecting any option other than
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results in vector instructions
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from the respective CPU instruction set being used.
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.
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.It Sy zfs_blake3_impl Ns = Ns Sy fastest Pq string
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Select a BLAKE3 implementation.
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.Pp
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Supported selectors are:
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.Sy cycle , fastest , generic , sse2 , sse41 , avx2 , avx512 .
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All except
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.Sy cycle , fastest No and Sy generic
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require instruction set extensions to be available,
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and will only appear if ZFS detects that they are present at runtime.
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If multiple implementations of BLAKE3 are available, the
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.Sy fastest will be chosen using a micro benchmark. You can see the
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benchmark results by reading this kstat file:
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.Pa /proc/spl/kstat/zfs/chksum_bench .
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.
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.It Sy zfs_free_bpobj_enabled Ns = Ns Sy 1 Ns | Ns 0 Pq int
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Enable/disable the processing of the free_bpobj object.
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.
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