alt Hacker News50,000 transactions a second is a bunch for humans.
It’s nothing for even an ancient CPU - let alone our modern marvels that make a Cray 1 cry.
The key is an extremely well-thought and tested design.
50,000 transactions a second is a bunch for humans.
It’s nothing for even an ancient CPU - let alone our modern marvels that make a Cray 1 cry.
The key is an extremely well-thought and tested design.
It was mostly written in COBOL. This is how I got into XENIX/UNIX. A machine went down that was a training machine: It required XENIX on a PC, because it ran on RM/COBOL on XENIX, because all the screens, and the encoding, already written were in COBOL. RM/COBOL had an ancient compatibility, but the code was extremely simple, having been ironed out many decades earlier. ( I got it in 1985, but all the creation dates were 1982. The original files must have been from the mid 1960s. I pointed this out, and someone called me on it. I found a training manual from 1966, and the screens were exactly The same, except of course for the 3270 status line.
It was fast on an 4.77Mhz IBM PC, and much faster on a 10Mhz V20.
50,000 transactions was pretty standard for a IBM Mainframe, now? The z/ Series is still about the same, but it scales up to 32 processors. ( excuse me, billions. per day )