Hello Mark, Yes, that is what I meant. Is there a way to increase zLinux capacity without buying physical IFL on Mainframe? Can I make use of LPAR and zVM virtualization features to achieve this?
I already learnt that enabling SMT on zVM doubled our vCPU count (from 4 to 8) on Hypervisor. After enabling the feature, CPU utilization On Mainframe dropped from 95% to 60%. On the other hand, I'm wondering if it negatively affected single threaded workloads? All the best Mariusz On Sun, 2 Aug 2020, 00:34 Mark Post, <mp...@suse.com> wrote: > On 7/31/20 7:46 PM, Mariusz Walczak wrote: > > We have 4 IFL on Mainframe box, 4 IFL on zVM and 4 cpu on zLinux. I'd > like > > to gain zLinux capacity (run more processes) and increase to 16 cpu. > Will I > > degrade performance of a single threaded workload if I do this? > > Do you mean you want to specify 16 virtual CPUs for one Linux guest, > while not changing the number of actual CPUs available to the LPAR? > That's usually a bad idea. > > If you're talking about something different, please say so. > > > Mark Post > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www2.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
