From: Balaji Chandrasekar (balaji@temple.edu)
Date: Mon Aug 25 2003 - 02:09:09 EDT
hello managers
We have a problem pertaining to the NFSv3 performance against
NFSv2, I have seen a lot of other posts discussing the same
topic , but have not got any satisfatory answers.
Here is my problem.
We have a standalone Alphaserver DS20 running Tru64 v5.1B and
Patch kit 1 which acts as a NFS server.
We also have 5 ES40's running v4.0F patch kit 7 running as
NFS clients.
Periodically I see the following NFS errors on all of my NFS
clients
Jul 15 07:47:18 nfsclient vmunix: NFS3 server nfsserver_name
not responding still trying
Jul 15 07:47:23 nfsclient vmunix: NFS3 server nfsserver_name
ok
I did a small experiment whereby I copied a 100MB file
concurrently on all the five NFS clients and I immediately
get the above error.At this time all my clients were running
NFSv3.
As a second experiment , I changed my clients to NFSv2 and
ran the same copy , and surprise I do NOT see any errors,
Also the the time it takes to copy all the files is one half
of what it takes with NFSv3.
I have checked the read/write sizes,timeo and retrans values
on both NFSv2 and NFSv3 and they are the same.
I should also mention that I have Tru64 UNIX v4.0F NFS
servers and the clients pointing to that server DO NOT get
the errors.
The above leads me to believe its more of a implementation
NFS on V5.1B problem.
Has anybody else seen this or know of any solution/fixes?
Thanx
Balaji./
Balaji Chandrasekar
http://www.balajichandrasekar.com
This archive was generated by hypermail 2.1.7 : Sat Apr 12 2008 - 10:49:33 EDT