[OmniOS-discuss] Slow NFS writes in 151026

[Lee Damon]

(This doesn't appear to have gone out so I'm re-sending. Apologies if 
it's a duplicate.)

On 8/23/18 16:43 , Lee Damon wrote:
> (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
>