Terrible NFS write performance.

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Drullputt

Cadet
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Apr 19, 2012
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Hello.

i am using ZFS as filsystem and sharing it with NFS to a windows 7 client. Everything is default and iv tested with both sync and async in NFS but still getting terrible write performances.
Its a singel disk setup, no raid, just a 7200rpm disk.

Do i get these results because of ZIL in ZFS and NFS flushing or is there any other factor that could place in?

I am using IoMeter as a testing software and the funny thing is that during Preparations it seem to load up the disk in a decent speed, but as soon as the test starts it more or less dies to about 0,5mb/s.


Thanks // Drullputt
 

peterh

Patron
Joined
Oct 19, 2011
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315
Grab a session with tcpdum/wireshark to find out.

Have you eliminated the obvious / half/full duplex etc ?
 
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