Dan: In my opinion you could test setting Jumbo Frame between them, or try increase the MTU in the Lan cards. I hope this helps
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-----Original Message----- From: Dan OBrien [mailto:dmobrien@lcsi.net] Sent: Thursday, July 10, 2003 5:25 PM To: 'toasters@mathworks.com' Subject: gigabit nfs performance
What can I expect for Gigabit NFS performance between my F630 NetApps and a pretty hefty Linux box, both running Gigabit network devices?
My filer is running:
NetApp Release 5.3.6R2: Sat Aug 5 09:40:44 PDT 2000
The Gigabit board is:
slot 10: Gigabit Ethernet Controller e10 MAC Address: 00:60:cf:20:2b:2f (1000fx)
e10: flags=300043<UP,BROADCAST,RUNNING,TCPCKSUM> mtu 1500 inet 209.41.211.225 netmask 0xffffffc0 broadcast 209.41.211.255 ether 00:60:cf:20:2b:2f (1000fx)
I'm using a Transition Networks 1000Base-SX to 1000Base-TX Media converter into a Linksys 2 Gigabit port / 24 100BT port switch.
The Linux box is running an Intel e1000 server card
e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex
All wiring is CAT 5E.
I mount the filer on Linux as:
mlswna:/ on /backup/mnt/mlswna/rt type nfs (ro,timeo=14,rsize=32768,wsize=32768,nfsvers=3,addr=209.41.211.225)
UDP, NFS3, 32K rsize. (Linux TCP NFS support is not quite ready for prime time.)
I copied a 100MB file in under 10 seconds. That's around 10Mbytes/second.
$ ls -l diskfile -rw-r--r-- 1 34726 34726 104857600 May 9 13:44 diskfile $ time cp diskfile /dev/null 9.85s real 0.00s user 0.31s system $ bs -c 104857600/9.85 10,645,441.6244
I would expect much better than this. The network/switch I'm on has little traffic. The only Gigabit use is the filer and Linux boxes.
What other advice can you give me? What other knobs to turn.
Regards,
Dan O'Brien, dmobrien@lcsi.net Cell: 614-783-4859 Work: 614-476-8473 Home: 740-927-2178 Pataskala, OH