re: http://www.garlic.com/~lynn/2014f.html#49 Beyond the EC12 http://www.garlic.com/~lynn/2014f.html#50 Beyond the EC12
for additional 4341 drift ... old post in (linkedin) IBM Historic Computing http://www.garlic.com/~lynn/2011m.html#46 From The Annals of Release No Software Before Its Time also has an old, different email from 26Aug1982 on 4341 http://www.garlic.com/~lynn/2011m.html#email820826 with more details about clusters of 4341s beating 3033. other old 4300 related email http://www.garlic.com/~lynn/lhwemail.html#43xx and some I/O topic drift (3033/3081 compared to 4341) ... i've periodically referenced FICON and how FICON is a enormously heavy-weight protocol layered on fibre-channel standard that drastically reduces native FCS throughput ... z196 peak i/o benchmark getting 2M IOPS with 104 FICON (layered on top of FCS) about same time as claim of single FCS for e5-2600 getting over million IOPS (two such FCS tops 104 FICON). posts mentioning FICON http://www.garlic.com/~lynn/submisc.html#ficon in 1980 I had gotten roped into doing channel-extender for STL that was moving 300 people from IMS group to offsite bldg with service back to STL datacenter. The support downloaded channel programs to the remote end and ran the extender asynchronous full-duplex ... with only simulation of half-duplex synchronous at the end-points ... reducing the enormous amount of channel protocol chatter latency and significantly increasing throughput ... then in 1988 I was asked to help LLNL standardize some serial stuff they had ... which quickly becomes fibre-channel standard. posts mentioning channel-extender http://www.garlic.com/~lynn/submisc.html#channel.extender -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
