On Tue, 28 Mar 2006 00:00:00 GMT, Ted MacNEIL <[EMAIL PROTECTED]> wrote:
>... >One weekend, two of them took the original RFC (?term), and re-wrote it from scratch. >The specs included UNIX functions and services to do things, so they used USS to do everything they could, so they didn't have re-invent the wheel. >The only thing they didn't do was the stack, since VTAM already had one, and it was pretty good. > >This made it to OS/390 V2.5, I believe. >And, they dropped to two support people. >They also made improvements in. 2.7, IIRC. >And, the performance improved drastically. >... I suspect the rewrite story is apocryphal. And while TCP/IP perfomance was greatly improved, the the 2.5 code was very buggy. I know the support story is wrong. TCP/IP Support was terrible back in 2.5 - as bad or worse than with the previous release of TCP/IP. In fact, IBM took some of the VTAM support people to help with TCP/IP support. It took several years, but TCP/IP support eventually became very good - one of the real turn-around stories at IBM. A lot of credit goes to the Service manager (whose name I'm blanking on. Vernon sometyhing.) Obviously, a lot of credit also goes to the level 2 people that had to put up with irate customers like me. A lot of improvements have gone into just about every release of TCP/IP (except while they were putting in IPv6 support). Pat O'Keefe ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
