# [OmniOS-discuss] Slow NFS writes in 151026

Lee Damon nomad at ee.washington.edu
Thu Aug 23 23:43:50 UTC 2018

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    (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

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