Messages in this thread | | | From | "Doug Smythies" <> | Subject | RE: [RFT][PATCH v7.3 5/8] cpuidle: Return nohz hint from cpuidle_select() | Date | Thu, 22 Mar 2018 13:46:49 -0700 |
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On 2018.03.22 10:40 Rafael J. Wysocki wrote:
...[snip]...
>The difference between this and the original v7 (of patch [5/8]) is > what happens in menu_update(). This time next_timer_us is checked > properly and if that is above the tick boundary and a tick wakeup occurs, > the function simply sets mesured_us to a large constant and uses that to > update both the correction factor and data->intervals[] (the particular > value used in this patch was found through a bit of experimentation). > > Let's see how this works for Thomas and Doug.
System idle test done for 74 minutes. After boot and after the system settles down for a couple of minutes, Processor package power is constant at 3.7 Watts. (great) Not worth a new graph to show a flat line.
V7.3 average package power = 3.68 Watts. V7 average package power = 3.68 Watts V7.2+ average package power = 4.06 Watts (+10%)
> For easier testing there is a git branch containing this patch (and the > rest of the series) at: > > git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git \ > idle-loop-v7.3
Thanks. I used this git branch this time and for the first time. Much easier.
... Doug
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