tune ZFS for fast clone and creation?

[Ian Downes]

Hello,

I know ZFS is already 'fast' with COW clones etc., but can ZFS be tuned
for faster clone and creation? The fast random access of a SSD helps but
what other options are there? Tuning caches? Different zpool layouts?
...?

I haven't been able to find any info so any suggestions would be
welcome!

some basic experiments:

zpool with a single 500 GB 7200 rpm consumer HDD
zpool with a single 64 GB consumer SSD

zfs create:
250 ms on HDD
110 ms on SSD

zfs clone: (about 1 GB of mixed size)
250 ms on HDD
85 ms on SSD