Messages in this thread | | | From | Nathan Lynch <> | Subject | Re: [PATCH 0/2] pseries/hotplug: Change the default behaviour of cede_offline | Date | Wed, 18 Sep 2019 12:08:43 -0500 |
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Gautham R Shenoy <ego@linux.vnet.ibm.com> writes: > The accounting problem in tools such as lparstat with > "cede_offline=on" is affecting customers who are using these tools for > capacity-planning. That problem needs a fix in the short-term, for > which Patch 1 changes the default behaviour of cede_offline from "on" > to "off". Since this patch would break the existing userspace tools > that use the CPU-Offline infrastructure to fold CPUs for saving power, > the sysfs interface allowing a runtime change of cede_offline_enabled > was provided to enable these userspace tools to cope with minimal > change.
So we would be putting users in the position of choosing between folding and correct accounting. :-(
Actually how does changing the offline mechanism to stop-self break the folding utility?
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