Table of Contents
ZFS Performance Issues
Great summary for virtualization: https://youtu.be/fo3EGuCszpE
Only for VM storage or databases do you need or want to enable sync.
If you simply use ZFS without foreign filesystems on it (VMs), ZFS will never corrupt on a crash due Copy On Write. So for regular filer use, disable sync unless you want a maximal security for small files like on a mailserver.
IOStat
https://docs.oracle.com/cd/E19253-01/819-5461/gammt/index.html
Statistics are cumulative since boot, so specify an interval for more useful stats.
zpool iostat zpool iostat 2 zpool iostat -v poolname 1
Solaris 11.4
It's much faster than OmniOS with OpenZFS.
Why Intel Optane
It's crazy not to unless you don't have NVMe or PCIe slot!
http://napp-it.org/doc/downloads/optane_slog_pool_performane.pdf
NVMe Hardware
PCIe 3.0 x8 low-profile card
Mount two M.2 800P as mirrored SLOG:
https://www.supermicro.nl/products/accessories/addon/AOC-SLG3-2M2.cfm