Fix improper calculation of CPU percentages #2123
Merged
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On linux, the user and nice cpu time counters include the respective guest and guest_nice counters. This results in improper calculation of percentages.
Please see:
https://github.com/torvalds/linux/blob/447976e/kernel/sched/cputime.c#L169
https://lists.linuxfoundation.org/pipermail/virtualization/2009-August/013459.html
giampaolo/psutil#940