Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!batcomputer!cornell!uw-beaver!milton!ogicse!zephyr.ens.tek.com!tektronix!percy!m2xenix!quagga!ucthpx!uctcs!ken
From: ken@uctcs.uucp (Ken McGregor)
Newsgroups: comp.sys.ncr
Subject: WIN/TCP on 850 - performance problems
Message-ID: <1991Mar23.080409.9552@ucthpx.uct.ac.za>
Date: 23 Mar 91 08:04:09 GMT
Sender: news@ucthpx.uct.ac.za (UCT News Admin.)
Reply-To: ken@staff.UUCP (Ken McGregor)
Organization: Dept. of Computer Science, University of Cape Town
Lines: 22


I have looked at the computer system of a company running an NCR 850.
This is a large system with 4AP's, 3FP's, 3CC's and 2-3Ep's.  They recently
moved the users from the CC's to terminal servers connected to Ethernet.
They are using WIN/TCP on the 850. 
Since then the performance has significantly degraded.  When running sar
the sys time has gone up by about 20-25% and the user time dropped from
40% to 15% with obvious decrease in response.  
I have the following questions
1.	Is this normal and can it be tuned?
2.	What is TCP/IP doing in the AP as the EP's are meant to be intelligent
so surely the packetizing/depacketizing is done there?  If not what is the
intelligent EP with its own downloaded kernel doing?

They are thinking of buying a number of 3000's but are concerned that the same
thing will happen again and are not too happy with WIN/TCP.  Is there an
alternative to WIN e.g. Lachman?

Can anyone please help me with this?
Ken MacGregor                                             ken@cs.uct.ac.za
Computer Science                             ken%uctcs%quagga@uunet.uu.net
University of Cape Town   ...uunet!{m2xenix!quagga,ddsw1!olsa99}!uctcs!ken