On Tue, Oct 03, 2000 at 11:40:24PM +0000, Sam wrote:
> [...]
> These are tests that we already done during whole nights :
> 20 netbsd clients on different 100 Mb networks, taring and copying off and from the 
> nfs servers...
> It didnt crash the Nfsd....

Couldn't you start the test on all the clients ?

> 
> So we think that it has someting to do with the number of simultaneous access from the clients and/or
> a special combination of things causing the nfsd to hang...
> 
> > 
> > What network do you have (speed and topology) ?
> 
> We got 450 Pcs connected to 100 Mb cisco switches (3500/2940) and a catalyst 6000 at the top.
> They all mount 5 FreeBsd servers. The two most accessed servers are the ones that have theirs 
> nfsd Stopped. It happens most of the time during heavy load, but it already happend fewer 
> times under very light load.

Ok, so the clients are all connected at 100Mbs, when the servers are also
connected at 100Mbs ?
Did you consider switching to gigabit ethernet for the server ? It's becoming
affordable now (2000FF for a netgear GA620 adapter; I don't know how much
for a gigabit module for the 6000 - a 3500 8 gigabit port is about 35000 FF).

> 
> I let you guys kmow if i have any news (tests of 1.5Alphas ... )...

yes, please :) If there are problems we'll try to fix them.

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
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