🚀 go-pugleaf

dboyes@is.rice.edu (David E Boyes) writes:
>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.

An affliction of which I am quite familiar with... :)

>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.

In general if our customers require tuning it is done within VTAM.  The
majority of our sites work run with our recommended BIND images.  Tuning
issues really come up most often when someone wants to run FTP's through
the same PU that they have 3270 traffic.  I does change the nature of
the problem, as you say, from OS tuning to VTAM tuning.

>-- 
>David Boyes
>dboyes@rice.edu
-- 
Matthew Lyle                                           matt@oc.com
Technical Support Specialist                           matt@utdallas.bitnet
West/SW/SE/Mid Atlantic Region (*Phew*)
OpenConnect System, Dallas, Texas                      (214) 490-4090