[comp.protocols.nfs] PC-NFS - PC Appl. failure due to Network Load ?

G.Eustace@massey.ac.nz (Glen Eustace) (05/21/91)

At a recent seminar, a point was made that concerns me.  We have a
large number of PCs running PC-NFS, yes the Sun product, but this
question applies to the others as well.

We were discussing network loading amongst other things and an
incident was raised which implied that WordPerfect and certain other
PC products would fail as network load increased.  Now this was a
failure as in the program reported an error not just a slowing done
to the point of no longer being usable.

We still have a significant number of 8086 based machines XT clones
mainly which would almost all be run at 8MHz.  We have seen
mysterious software failures, most of which haven't been
reproducable.  The suggestion made at the seminar was that as the
volume of packets going past the PC increases, the PC is less and
less able to process them ( the PC CPU is just toooo slow. ).  This
problem is apparently aggravated by broadcasts but we don't seem to
see alot of those.

My questions are really these;
  At what point, in terms of network load, is traffic higher than an
  8086 based PC can handle?
  Does the ethernet card make any difference ?  We have WD8003Es and
  EBs.
  Has anyone experienced this kind of failure ?  What product ?

The only solution suggested was to subnet and bridge the network to
attempt to reduce traffic to an acceptable level.  What is acceptable?

Comments would be appreciated.

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Glen Eustace, Systems Software Manager | EMail: G.Eustace@massey.ac.nz
 Computer Centre,  Massey University,  Palmerston North,  New Zealand
Phone: +64 63 69099 x7440, Fax: +64 63 505 607,       Timezone: GMT-12