[OmniOS-discuss] Slow NFS writes in 151026

[Lee Damon]

(I've just changed from digest to regular subscription as I see there
are messages relevant to this that I haven't received yet...)

Doug, I'm not familiar with the evil zfs tuning wiki mechanism. I'll
have to see if Google can help me find it.

As for the ZIL+ L2ARC on the same SSD potentially being the problem,
clearly I can't say with 100% certanty that it is not a problem however I
have a second host (running 151022) with _exactly_ the same configuration
of hard drives + split-SSD and NFS writes to that pool are fine.

hvfs2 is ~18 months old but the chrup0 pool is a few months old.

time cp -rp /misc/fs1test/004test /misc/hvfs2chru/omics1

real    3m11.431s
user    0m0.177s
sys     0m28.030s

time cp -rp /misc/fs1test/004test /misc/fs2test/omics1

real    21m13.412s
user    0m0.188s
sys     0m28.678s

nomad