From: Paul Heinlein <heinlein@cse.ogi.edu>
Subject: iostat wkB/s numbers during testing
Date: Fri, 14 Feb 2003 07:32:20 -0800 (PST)
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Message-ID: <Pine.LNX.4.44.0302140716060.20965-100000@glenfiddich.cse.ogi.edu>
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I'm using a dual P-III Compaq DL380 running Red Hat 8.0 to host a new
ATABoy RAID array purchased from Nexsan. It's connected to our switch
via a gig/fiber card based on the Intel 82542 chipset.

The service stack (for lack of a better phrase) is

* ATABoy2 -- six-drive RAID-5 array that presents itself to the host 
             as a single SCSI device (no multiple LUNs)
* LVM     -- 1.0.3, one PV, one VG, one LV (so far :-)
* XFS     -- 1.2pre5
* NFS     -- v2/v3, UDP only, 80 nfsd threads
* Samba   -- 2.2.7

Last night, I set up six NFS clients and one Linux/smbfs client to run 
iozone against the nfs mount/samba share.

I was keeping track of stats using iostat -x on the server. My typical
wkB/s numbers hovered in the 15000 to 19000 range. Is that sort of
result set consistent with what any of you have seen for Linux-hosted 
NFS RAID exports?

--Paul Heinlein <heinlein@cse.ogi.edu>


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