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We will soon be upgrading our AS/436 box, a IBM 9402-436 RISC-2102, which runs BPCS 405 CD, from V3R7M0 to V4R3 & since there seems to be a lot of interest in performance issues on BPCS_L - I thought it might be smart to mention this. I lack the performance expertise that I am seeing on BPCS_L and also I am still a newcomer to OS/400. We are relying heavily on our local hardware support KSAI to see us through the transition. Here is some info to put our site in perspective. Our BPCS Y2K consultants did add a bit of SQL to the BPCS 405 CD mix. We are running some S/36 code re-worked for OS/400. Machine/36 is alive with intermittent visitors. Total on-line users is just under 30 with several sessions each. We abandoned e-commerce (EDI I) to get the Y2K conversion accomplished. We are about 2/3 Green Screen & 1/3 Emulation. I have been working at Central Industries since August 1984 - it is the second longest I have been with any one employer & as I am now aged 55 I would just as soon stay here for the rest of my useful career. We have 3 physical sites connected via SDLC - one is pure IBM hardware, the other has Perle cluster of remote controllers attached to a Motorola Modem - the Motorola is under IBM maintenance & we also have a spare one in a closet, after an experience with lightning frying an IBM modem & replacement not being super fast. That was not IBM fault - one of our sites is on a sandy soil flood plain that does not have an electrical ground & at the time of modem going down it was surrounded by a violent union strike that lasted 3 years. When we were running the business on SSP, I did run SMF occasionally & it pretty much confirmed my overall perceptions as to where our bottlenecks were, but there were some issues it was helpful clarifying. e.g. Would a faster comm line help a particular site - answer only 10% of the time does something have to wait due to comm bottleneck, but as we grow sessions & printers there, they will need faster comm & in the meantime, we have a disk I/O problem, in which I have balanced stuff across drives as best I can, but more memory for cache will make a big difference. We got more memory for cache, using EMC brand name, & it was a big help - IBM had said that if the hit-miss ratio on cache was 2-1 or better, then cache was working effectively to our benefit & we generally got 7-1, but on my home PC I often get 20-1 - I had tried various cache flavors & I do have an ancient box that needs serious upgrade. We got Acceler8 from ASNA & it was a big help with BPCS/36 & we did serious benchmarks before deciding to keep it, because we had also tried it years ago on MAPICS I & it did more harm there than good. We also got a faster comm line for the growing site & it was a big help, to which I partially attribute growing the comm line speed faster than the demand on bandwidth. Faster processors & CISC-RISC & better OS/4 version also was big help. The biggest leap was about 50 fold increase in speed when we went from SSP on 5360 to SSP on OS/400, in 2 installments - AS/436 then guest OS. There are times that I think that the relatively low price investment in something better from IBM is a bigger bang for the buck for the company, than me futzing around with performance analysis. Al Macintyre +--- | This is the BPCS Users Mailing List! | To submit a new message, send your mail to BPCS-L@midrange.com. | To subscribe to this list send email to BPCS-L-SUB@midrange.com. | To unsubscribe from this list send email to BPCS-L-UNSUB@midrange.com. | Questions should be directed to the list owner: dasmussen@aol.com +---
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