while PC-BSD 10.0 was much faster... Too fast, in fact. The reported speeds were past where the Fujitsu HDD is capable of performing so it looks like there's some handling of ZFS in PC-BSD where not all operating may be writing to the disk as handled in previous releases or other changes with syncing to the disk or caching.
The lz4 compression algorithm is a high-performance replacement for
the lzjb algorithm. It features significantly faster compression and
decompression, as well as a moderately higher compression ratio than
lzjb, but can only be used on pools with the lz4_compress feature set
to enabled. See zpool-features(7) for details on ZFS feature flags
and the lz4_compress feature.
the lzjb algorithm. It features significantly faster compression and
decompression, as well as a moderately higher compression ratio than
lzjb, but can only be used on pools with the lz4_compress feature set
to enabled. See zpool-features(7) for details on ZFS feature flags
and the lz4_compress feature.
It can deliver faster results but it's unsafe in the case of power outages or other issues if the disk is left in an awkward state.
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