Radoslaw Skorupka wrote: >I observe that (default) number of SAP processors is growing with new CPC >generations.
A$$uming you're referring to 'System Assistance Processor' ... Where do you see that grow trend? Any documentation [1] , reports or commands or something? Just curious if you don't mind please. >Of course the computation(*) power per CPU is also growing significantly => total power of SAP is growing even more. >What is the rationale behind ? Good question. After some reading, I think it is to spread out I/O workload from the CPU, otherwise all of them havee to wait for SAP? Oh, I could be wrong of course. Groete / Greetings Elardus Engelbrecht [1] - I see this on big blue's knowledge centre this interesting snippet: "Every modern mainframe has at least one SAP; larger systems may have several. The SAPs execute internal code to provide the I/O subsystem. An SAP, for example, translates device numbers and real addresses of channel path identifiers (CHPIDs), control unit addresses, and device numbers. It manages multiple paths to control units and performs error recovery for temporary errors. Operating systems and applications cannot detect SAPs, and SAPs do not use any "normal" memory." But something bothers me now - can anyone read above snippet and define 'larger systems'? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
