As many sites are upgrading from SLES 11 to SLES 12, I was curious if there were any specific references or known standards regarding "tunable parameters" related to s390x? Outside of the obvious things like setting the vm.swappiness to something other than the default of "60", I was curious if there were any "standard configs" for SLES 12 regardless of the application it's running.
For example, on some of our SLES 11 systems, the following notes were made in /etc/sysctl.conf regarding "tuning for s390x". I'm not sure if these are still advantageous to carry over and if there should be any additional configuration changes: kernel.sched_min_granularity_ns = 10000000 kernel.sched_wakeup_granularity_ns = 15000000 kernel.sched_latency_ns = 80000000 kernel.sched_tunable_scaling = 0 I was able to find a document on SUSE Blog regarding "SLES 11/12 OS Tuning & Optimization Guide", but seems architecture independent and doesn't seem to reference anything specific to SLES 12 vs SLES 11. Reference: https://www.suse.com/c/sles-1112-os-tuning-optimisation-guide-part-1/ Floyd Rodery ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
