Chris Mason wrote: >> 'Maximizing the SNA RU size reduces end-to-end acknowledgments at the 3270 >> application level.' >This is just common sense.
Thanks. Agreed. >In order to illustrate the point I'm assuming you have to send 10K of data and >the flow control parameters are such that each unit of data sent must be >acknowledged - just to keep it simple. >- If you send 10 units of 1K you are obliged to wait while 10 acknowledgements >are returned. >- If you send 1 unit of 10K you are obliged to wait while 1 acknowledgement is >returned. >QED! Thanks for this useful explanation. >I am a great advocate of regular monitoring of buffer pool patterns of use. >First of all I advise that dynamic buffering should be used. Then I advise to >guard against "too much" or "too little". This is what my VTAM and TCP/IP guys and gals doing. When VTAM is doing a GETMAIN for more buffers, all using VTAM need to wait for that GETMAIN to complete. Not a problem, but observable especially when all and everyone is logging on in the morning after the previous night IPL. Groete / Greetings Elardus Engelbrecht ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
