One key question is whether lpars are on same cec or different ones... virtual ctcs or "real"?
Scott Rohling On Fri, Aug 14, 2020, 1:29 PM Grzegorz Powiedziuk <gpowiedz...@gmail.com> wrote: > Hello, > From your experience, during the relocation from one LPAR to another, how > long on average the quiescence period is (no network, no nothing)? > I understand that it depends on many factors, but I am just asking for some > examples. > From my understanding the quiescence is one of the last steps, right before > the final pass of memory which should be as small as possible. I understand > that if there is a lot happening in the VM then the last pass can also be > quite big. But still ... > > Anyway, I have a rhel VM with 128GB of memory running DB2. Currently not > prod so CPUs are mostly idle. No paging, no swapping, not much traffic and > the quiescence takes 20-30 seconds which seems a lot (the vmrelocate takes > a couple of minutes in total) . It is causing db2 and ssh sessions to > timeout. > I am wondering if that is normal or we have something misconfigured. > > During the last phase the linux kernel sends error messages "QDIO problem > occurred" for each FCP and some QETH errors and they are all followed with > recoveries. All these are being thrown at the same time right after > quiescence ends (I think). Which kind of makes sense to me. > > thanks! > Gregory > > ---------------------------------------------------------------------- > 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
