Subject: Re: kern/382: nfs hangs
To: James Jegers <jimj@enigma.cs.uwm.edu>
From: Chris G. Demetriou <cgd@alpha.bostic.com>
List: netbsd-bugs
Date: 08/02/1994 22:16:42
> >Description:
> 	
> 	I have 2 Netbsd 1.0beta machines.  The server a 486/50, the client
> 	a 386/33.  About a month or two ago nfs worked fine on these two
> 	machines, recently whenever I copy a large file(above 5k or so) 
> 	on the client to one of the clients local drives the nfs connection
> 	hangs. I cann't control z or c it.  
> 
> 	I have an ethernet scope on the wire and the client machine 
> 	sends a packet to the server, the server responds with about 
> 	5 packets, then there is a delay (about 10seconds) and it repeats. 
> 	If I break into the debugger it usually says I'm in bpendsleep().
> >How-To-Repeat:
> 	
> >Fix:
> 	I'm not sure what to try, but I know the kernel fairly well and
> 	could test things out if someone had some ideas.

You've included bordering on zero details on what your ethernet/nfs setup
looks like...

what kind of cards do you have?  how much packet RAM do they have?
what options are being used to your NFS mount?
please don't send bug reports without data about your setup!


It sounds to _me_ like your client is choking on back-to-back packets.


cgd

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