home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!sun-barr!cs.utexas.edu!bcm!rice!dboyes
- From: dboyes@is.rice.edu (David E Boyes)
- Newsgroups: comp.protocols.ibm
- Subject: Re: TCP/IP impact on a S/3090 M/F
- Message-ID: <1992Jul24.043232.20862@rice.edu>
- Date: 24 Jul 1992 04:32:32 GMT
- References: <1992Jul23.160241.23996@inesc.pt> <1992Jul24.021550.16519@rice.edu> <1992Jul24.031725.5562@ra.oc.com>
- Sender: news@rice.edu (News)
- Organization: Rice University
- Lines: 51
-
- In article <1992Jul24.031725.5562@ra.oc.com> matt@ra.oc.com (Matthew Lyle) writes:
- >dboyes@is.rice.edu (David E Boyes) writes:
- >>As a side note, most heavy MVS sites I'm aware of use IBM's TCPIP
- >>software, but purchase the hardware interfaces from other
- >>vendors, such as Bus-Tech, Interlink, or OpenConnect Systems.
-
- >I've held my tongue this far, but can't let this pass.
- >servers will not work with IBM's TCP/IP implementation. We have
- >our own implementations of telnet, ftp, and smtp (to profs or snads)
- >which work over our OCS servers.
-
- Oops; brain fault -- thanks for catching it. I was thinking of
- your PC 3279G emulator that runs over various DOS TCP protocol
- stacks (which I use and like a whole lot) and fingers overran brain.
-
- The point was that few sites I know of buy true-blue IBM
- controllers for this purpose -- the other vendors generally produce
- hardware that outperforms the IBM offering by a significant
- margin -- but many run the IBM software offering with these 3rd
- party controllers for compatibility and application development.
- The 3172 is not as fast as it could be, and it's considerably
- more expensive than most of the other 3rd party options.
-
- >Needless to say we feel that our
- >products will outperform IBM's and they definitely utilize far fewer
- >mainframe resources than IBM's.
-
- Undoubtedly, they do, but you must agree that it moves the tuning
- issue from OS tuning for general performance to an access method
- tuning problem, which is considerably more difficult to approach
- and measure for someone who may not be familiar with all the gory
- details. I'm *not* saying that your approach is wrong; it simply
- changes the nature of the problem, albeit to one that a site with
- a extensive investment in SNA *should* be relatively familiar with.
-
- >I believe that you will find that the resource impact of IBM's TCP
- >is significantly more that you would believe from David's response.
-
- I've had reasonable results from those numbers in several
- consulting arenas. I admit that they are rough, and in fact, said
- so, but they certainly aren't the result of rigorous testing
- programs. It's what worked for me.
-
- >Matthew Lyle matt@oc.com
- >Technical Support Specialist matt@utdallas.bitnet
- >OpenConnect System, Dallas, Texas (214) 490-4090
-
-
- --
- David Boyes
- dboyes@rice.edu
-