Hi Clark, It appears as though we actually are getting close to the 1 microsecond value. Of course I can't find it today but yesterday when I saw the *ahem* discussion between Seymour and Bill, I went searching because I didn't think the industry was anywhere near microsecond speeds. An article I found from 2 years ago said that IBM had achieved about 5 microseconds using zHyperlink. Today the closest I could find to that article was in an IBM blog stating the DS8900 arrays are delivering as low as 18 microsecond latency. So we're a lot closer to the elusive microsecond than I had imagined. Now, when this will make it to the real world is anybody's guess. :-)
Rex -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Clark F. Morris Sent: Wednesday, December 8, 2021 9:18 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: [EXTERNAL] 950K IO max on Z15 LPAR was Re: AWS is down. On Thu, 9 Dec 2021 02:21:28 +0000, Seymour J Metz <sme...@gmu.edu> wrote: >Going from 5 milliseconds to one tenth of that is certainly quite significant, >and I have no doubt that one day we will get to the performance that BJ >claimed, but we're not there yet. When it is claimed a Z15 LPA maxes out at 950K I-Os, how many concurrent I-Os over how many paths are involved? Clark Morris ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- The information contained in this message is confidential, protected from disclosure and may be legally privileged. If the reader of this message is not the intended recipient or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any disclosure, distribution, copying, or any action taken or action omitted in reliance on it, is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by replying to this message and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
