Changes to QoS for VoIP is affecting NFS
Our campus is starting to switch over to a setup of VoIP for the basic
phone services using cisco hardware. The thing is since the QoS was
changed to accommodate the VoIP, the NFS of our department went down.
After some sys-admin gymnastics I was able to reestablish some
functionality of NFS (basically forcing NFS to go through TCP instead
of UDP). But NFS over TCP is so slow...
Only the SGI (IRIX) clients are affected by the problems, plain Linux
box were OK. After some more testing, I was able to make NFS/UDP work
for file transfer by adding rsize=4096,wsize=4096 to the mount command
but as soon as I would try to do an ls of a directory with a lot of
files, NFS would choke again. So reducing the read/write size helped,
but not completely. Just this week, I learned that another department
has similar problems with Macintoshes. Any one has similar problems
or suggestion I can give the network managers.
Richard Lefebvre "Don't Panic"
quasi(@AROBAS)videotron(.POINT)ca -- THGTTG
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