I have the same problem. I have also tried ndmpcopy, and have found performance has increased, however not substantial enough to jump up and down for joy. We have added Gig patches to our solaris 2.6 installation. (Presumably in solaris 2.8 the patches would be included. Flow control is set to full, No CRC errors. Full Duplex enabled. Gig Network running NFS Version3 with UDP and I could get better performance with Sun to Sun or /tmp to Netapp. Our Netapps are in cluster and combinations of large file transfer between volume to volume on the same Netapp or even volume to volume between Netapps in cluster gives poor performance. CPU utalisation is not over 20%. Our Gig cards are Version 3.

Thanks Kevin -----Original Message----- From: Mike Carroll [mailto:mcarroll@chiaro.com] Sent: 21 January 2002 22:11 To: 'Rick Gardner'; 'toasters@mathworks.com' Subject: RE: Performance Issues

If you use ndmpcopy provided from the now site, it will not copy your files across the network.

basically like: ndmpcopy <filer_name>:/vol/vol0/test <filer_name>:/vol/shares/test

Would copy from one volume to another without the network.

The command also works copying between filers if you have more than one, that's why the hostname before the filenames.

Search for ndmpcopy at the NOW site, it will help more!!

Mike Carroll

-----Original Message----- From: Rick Gardner [mailto:rgardner@westernelectronics.com] Sent: Monday, January 21, 2002 12:39 PM To: 'toasters@mathworks.com' Subject: Performance Issues

Anyone seen this problem?

I have performance problems when I copy large amounts of data between directories within the same volume on the NetApp. It is about 10 times faster to copy it back to my Sun box /tmp and then back to the filer.. I have a Cluster 820 with Gig NICs and the Sun box is a SunFire 280R, Solaris 8, with Gig NICs. No options with the mount commands.

No CRC errors on the switch, NetApps, or Suns...

Any ideas?

Thanks!

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