[email protected] (Norman.Hollander) writes: > Absolutely agree! I've done various tech sessions, and customer > presentations on this for years. As long as you know what happens > when your system runs at 100%, it's a good thing. There are NO roll > over minutes. What you didn't use a minute ago, is not available in > the next. If important work is meeting its goal, why not get your > money's worth?
slightly modulo the SAPs (system assist i/o processors). Published peak I/O numbers for z196 has all SAPs running at 100% being able to handle 2.2M SSCH/sec ... however recommendation is that the SAPs be kept to no more than 70% busy (or 1.5M SSCH/sec). so far published ref is that ec12 will have 30% increased peak i/o throughput compared to z196. part of the issue may be some serialized throughput operations ... where latency becomes an issue ... where having immediate resources available (rather than waiting in queue) to reduce latency can become important. past posts discussing FICON (and some SAPs) http://www.garlic.com/~lynn/submisc.html#ficon -- 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
