*BSD News Article 18112


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From: simon@dcs.rhbnc.ac.uk (Simon Richardson)
Newsgroups: comp.os.386bsd.bugs
Subject: Re: nfsd-udp very cpu hungry...
Date: 8 Jul 1993 15:52:44 GMT
Organization: Univ. of London, Royal Holloway College.
Lines: 47
Message-ID: <21hfsc$5v2@sun.rhbnc.ac.uk>
References: <1993Jul8.104735.16179@cnplss5.cnps.philips.nl>
NNTP-Posting-Host: cad3.cs.rhbnc.ac.uk

rooij@mozart.cft.philips.nl (Guido van Rooij) writes:
> simon@dcs.rhbnc.ac.uk (Simon Richardson) writes:
> 
> 
> >Hi.
> 
> >I am having a spot of bother setting up 386bsd on a network.  I have the
> >0.2.2 patchkit installed.  I have a 486/DX2 at 33 (66?) Mhz which I am
> >trying to use on ethernet as a server, with an nfs card configured as ne0.
> 
> >When my other (386Dx 40Mhz) machine tries to use NFS off this machine, the
> >nfs-udp daemon becomes very cpu hungry.  ps -aux (eventually) reports 556%
>                                                                        ^^^^
> Wauw....Thats nice...a virtual cpu os :-)
> I wish I had a cpu that could be used 500% ;-)

I wish I had a machine that could be used 5% :-(.  But it would be a nice
thought, wouldn't it?

> >cpu usage.  Obviously this degrades performance a tad. (5 mins to log on, or
> >worse).
> 
> >I can FTP large files from one machine to another, and telnet from one
> >machine to another.  Ping reports no problems, so I assume it is just NFS.
> 
> >Is there a patch?  Is anyone working on this?  Or have I done something
> >silly?

> Perhaps it is the ne2000 driver? How about testing the same system with
> a wd8003 for a day or so (just lend it from someone).

Firstly: I know no-one with a wd8003.  Second, telnet and ftp seem to work. 
I guess that ftp transferring large files must hammer the ethernet as hard
as anything will: and the amount of network traffic is much larger during
ftp's than during the locked-out condition: in fact the network traffic
while locked out is really quite slight.  (I am not analyzing anything
fancy: I have stuck a 'scope on the ethernet cable.)

I remain mystified...


	Simon

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"A thousand violins cloy very rapidly without percussion"
						John Fowles