Linked by snydeq on Fri 12th Aug 2011 03:55 UTC
OSNews, Generic OSes InfoWorld's Galen Gruman highlights 18 technologies that remain core to the computing experience for IT, engineers, and developers 25 to 50 years since their inception. From Cobol, to the IBM mainframe, to C, to x86, these high-tech senior citizens not only keep kicking but provide the foundations for many vital systems that keep IT humming.
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I play on both mainframes and Sun servers.
by rcsteiner on Sun 14th Aug 2011 00:39 UTC in reply to "RE[4]: Infoworld"
rcsteiner
Member since:
2005-07-12

There's no contest. The Unisys Clearpath mainframes we use (using an airline-focused OLTP environment called HVTIP) are able to parse a screen, do several I/Os to various files, and return a response to the customer in under 30 milliseconds, and can do that with a load of more than 600 of those online transctions per second.

I'm sure IBM's OLTP architecture (TPF?) is similar. The Unisys boxes use multiple IPs and IOPs, very fast files mapped into cache, and databases (in our case something called "freespace files") which use sets of preallocated fixed-length records and are lightning fast compared to anything relational.

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