zHPF has finally enabled FICON to catch up to the (high) performance of the underlying fibre channel (which non-z uses), and still keep the benefits of FICON -- which are substantial. It isn't just performance. For z15 IO is ROI competitive with best of breed cloud servers, and beats them with the other characteristics. Sadly these studies haven't had wide publicity, exposure on IBM-Main is hardly helpful. Two decades of bad FICON is a hard road to straighten.
On Thu, Dec 9, 2021 at 3:01 PM kekronbekron < [email protected]> wrote: > Found it: > > https://www.ibm.com/support/pages/node/6355789 > > https://www.ibm.com/support/pages/system/files/inline-files/IBM_z15_FEx16SA_Performance_2020.pdf > > - KB > > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ > > On Thursday, December 9th, 2021 at 9:28 AM, kekronbekron < > [email protected]> wrote: > > > Hi Attila, > > > > For the curious, a link to the study will be helpful. > > > > Is it in TechDocs? > > > > - KB > > > > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ > > > > On Thursday, December 9th, 2021 at 9:05 AM, Attila Fogarasi > [email protected] wrote: > > > > > I don't know about that particular benchmark, but IBM has a published > z15 > > > > > > zHPF benchmark which does 300k+ IO/sec over a SINGLE FEx16SA channel > (using > > > > > > multiple ports). That was published almost 2 years ago (jan 2020). > > > > > > On Thu, Dec 9, 2021 at 2:18 PM Clark F. Morris < > > > > > > [email protected]> wrote: > > > > > > > On Thu, 9 Dec 2021 02:21:28 +0000, Seymour J Metz [email protected] > > > > > > > > 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 [email protected] with the message: INFO > IBM-MAIN > > > > > > For IBM-MAIN subscribe / signoff / archive access instructions, > > > > > > send email to [email protected] with the message: INFO IBM-MAIN > > > > For IBM-MAIN subscribe / signoff / archive access instructions, > > > > send email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
