@lathiat: > - Is there some specific hardware where scaling-driver=pcc-cpufreq > and scaling-governor=ondemand performs poorly. I have yet to run a > benchmark on my example hardware to find out.
Yes, we first started seeing this when deploying new Ubuntu Archive servers where we had two servers in the same DC taking on the same amount of traffic/requests. One was showing much higher load and performing much worse than the other. We brought up others in another DC and saw the same. The internal ticket, RT#90571, has some details. The specs differ with the one without issues being: | economy - HP ProLiant DL380 G7 The ones that were showing issues are: | hanger - HP ProLiant DL360p Gen8 | steelix - ProLiant DL380 Gen9 | keeton - ProLiant DL380p Gen8 By default, they're using the pcc-cpufreq but we also tried acpi-cpufreq which didn't seem to have made any difference. This led to us filing LP: #1579278 and the change to a piece of software we use to deploy disabling the 'ondemand' CPU governor: | https://bazaar.launchpad.net/~canonical- sysadmins/basenode/trunk/revision/98 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1806012 Title: set-cpufreq: 'powersave' governor configuration sanity on ubuntu server To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1806012/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
