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Bug: 77971261
Test: Manual
Change-Id: I78f8273e82b77090bde7184922e58d7cd39935ee
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
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According to the profiling on Hikey960, usually we need set 15% ~ 20%
boost margin for schedtune for UI performance boosting. With this
setting and using PELT signal, the janks% can be decreased to <30%.
This patch is to set boost margin to 20% and this also can leave the
room for PELT performance optimization.
Change-Id: Ic5eaa78294248076a0e2310461cd00a2fd7884e1
Signed-off-by: Leo Yan <leo.yan@linaro.org>
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For UI performance we need to ensure GPU and DDR frequency to meet the
performance requirement, otherwise even set the CPU boost margin to high
value but the bottleneck is GPU or DDR side but not CPU. So this commit
introduces the interface to support GPU and DDR performance boosting.
After profiling on Hikey960, this patch adds the related performance
boosting parameters for it. The DDR is set to 685MHz as minimum
frequency and GPU is set to 960MHz as minimum value.
Change-Id: Id5f6b0605a90f76cf55d891f4b7df3c0bf193aee
Signed-off-by: Leo Yan <leo.yan@linaro.org>
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Hikey960 has different CPU architecture with Hikey, these two platforms
should use their own dedicate configurations for power, especially for
EAS related settings.
This patch is to split the power related settings into two files, one
is init.hikey.power.rc and another is init.hikey960.power.rc. The main
different setting for power setting is related with EAS parameters in
proc nodes.
For Hikey we set the parameters as below:
write /proc/sys/kernel/sched_is_big_little 0
write /proc/sys/kernel/sched_cstate_aware 1
write /proc/sys/kernel/sched_sync_hint_enable 1
write /proc/sys/kernel/sched_initial_task_util 0
For Hikey960 we set the parameters as below:
write /sys/kernel/debug/sched_features "ENERGY_AWARE"
write /proc/sys/kernel/sched_is_big_little 1
write /proc/sys/kernel/sched_cstate_aware 1
write /proc/sys/kernel/sched_sync_hint_enable 0
write /proc/sys/kernel/sched_initial_task_util 0
On Hikey960 we also set default boost margin to 50%, and
touch-boost to 100%. This will let the CPU frequency to reach
highest OPP so can reduce scheduling latency; this is used to
improve the GPU rendering performance.
write /dev/stune/top-app/schedtune.boost 50
write /dev/stune/foreground/schedtune.boost 50
Change-Id: I641f5c78075012153fb73e830cb31dfc8dfd6e87
Signed-off-by: Leo Yan <leo.yan@linaro.org>
[jstultz: Added and tweaked some of the parameters to work with
the parameterized powerHAL]
Signed-off-by: John Stultz <john.stultz@linaro.org>
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