On Fri, 19 Oct 2007 09:38:02 +0000, Ted MacNEIL <[EMAIL PROTECTED]> wrote:
>>When porting big applications or servers to z/OS UNIX the ... >It's not just z/OS UNIX. >The first implementation of TCP/IP on OS/390 was a port from VM. >And, it was a pig until they decided to re-implement by starting from scratch using z/OS UNIX (circa 2.7). >... The really big roll-out was at 2.5, and it, too, was a big porting effort because a number of the redesigned "OS/390" processes were Unix processes ported to Unix System services. The new implementation certainly was much better performing, but it had its own growing pains. For a while there were a lot of bugs, and service was pretty terrible because the support people (IMO) either weren't familiar with the new (Unix-based) processes or weren't familiar with MVS.[1] The doc was pretty terrible, too. And there was a huge lack of diagnostic tools. All in all, I would not hold up the TCP/IP reimplementation as a model of a successful replacement of a poorly ported product. It took a number releases before I would call it successful. Pat O'Keefe [1] On the other hand, the improvement in TCP/IP support is one of the truely great success stories. Within a couple years, TCP/IP support went from absolutely terrible to one of the best support teams I've seen at IBM (and therefore, anywhere). I am unfortunately blanking on the name of manager of the team at that time, and that's too bad because he deserves public praise. I can picture him; I just can't think of his name. :-( ---------------------------------------------------------------------- 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
