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Sparrow_AW2.0 enabling all cores + GPU boost

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By LeeonLee, Member on 6th June 2018, 11:17 AM
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Hello, I decided to publish some guide + scripts I already use for a while, which allows you to use all CPU cores and boost GPU performance.
Battery consumption using this configuration surprisingly does not change much or even did not change at all, with default as well with new config my watch stays alive for ~32h with daily usage.

Some theory:
Sparrow is sold with Qualcomm Snapdragon 400 1.2GHz, which is 4 core CPU. ASUS AW2.0 official kernel though supports only 600MHz and 787MHz, as Asus probably thinks this is good balance between battery life and performance.
GPU is Adreno 302/305, which is capable running up to 450MHz, which is also supported by ASUS AW2.0 kernel.

Where is the catch?
During boot there are all four CPU cores enabled, however there is post-init script, disabling two of those and setting frequency as fixed 738MHz with performance governor (no frequency scaling). GPU is set to fix 200MHz:

/system/bin/init.asus.post_boot.sh
Code:
#!/system/bin/sh

PATH=/system/bin

cd /sys
echo 4 > module/lpm_levels/enable_low_power/l2
echo 1 > module/msm_pm/modes/cpu0/power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu1/power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu2/power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu3/power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu0/standalone_power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu1/standalone_power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu2/standalone_power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu3/standalone_power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu0/standalone_power_collapse/idle_enabled
echo 1 > module/msm_pm/modes/cpu1/standalone_power_collapse/idle_enabled
echo 1 > module/msm_pm/modes/cpu2/standalone_power_collapse/idle_enabled
echo 1 > module/msm_pm/modes/cpu3/standalone_power_collapse/idle_enabled
echo 1 > module/msm_pm/modes/cpu0/power_collapse/idle_enabled
echo 1 > module/msm_pm/modes/cpu1/power_collapse/idle_enabled
#Put all other cores offline
echo 0 > devices/system/cpu/cpu2/online
echo 0 > devices/system/cpu/cpu3/online
governor="performance"
scaling_min_freq="787200"
if [[ `grep "oem_perf_change" /proc/cmdline` ]];then
    if [[ `grep "oem_perf_on" /proc/cmdline` ]];then
        oem_perf_stats="1"
    else
        oem_perf_stats="0"
    fi
    echo -n $oem_perf_stats > /factory/oem_perf_stats
fi
echo $governor > devices/system/cpu/cpu0/cpufreq/scaling_governor
echo $governor > devices/system/cpu/cpu1/cpufreq/scaling_governor
#below ondemand parameters can be tuned
echo 50000 > devices/system/cpu/cpufreq/ondemand/sampling_rate
echo 90 > devices/system/cpu/cpufreq/ondemand/up_threshold
echo 1 > devices/system/cpu/cpufreq/ondemand/io_is_busy
echo 2 > devices/system/cpu/cpufreq/ondemand/sampling_down_factor
echo 10 > devices/system/cpu/cpufreq/ondemand/down_differential
echo 70 > devices/system/cpu/cpufreq/ondemand/up_threshold_multi_core
echo 10 > devices/system/cpu/cpufreq/ondemand/down_differential_multi_core
echo 787200 > devices/system/cpu/cpufreq/ondemand/optimal_freq
echo 300000 > devices/system/cpu/cpufreq/ondemand/sync_freq
echo 80 > devices/system/cpu/cpufreq/ondemand/up_threshold_any_cpu_load
echo $scaling_min_freq > devices/system/cpu/cpu0/cpufreq/scaling_min_freq
echo $scaling_min_freq > devices/system/cpu/cpu1/cpufreq/scaling_min_freq
echo 787200 > devices/system/cpu/cpu0/cpufreq/scaling_max_freq
echo 787200 > devices/system/cpu/cpu1/cpufreq/scaling_max_freq
#Below entries are to set the GPU frequency and DCVS governor
echo 200000000 > class/kgsl/kgsl-3d0/devfreq/max_freq
echo 200000000 > class/kgsl/kgsl-3d0/devfreq/min_freq
echo performance > class/kgsl/kgsl-3d0/devfreq/governor
chown -h system devices/system/cpu/cpu[0-1]/cpufreq/scaling_max_freq
chown -h system devices/system/cpu/cpu[0-1]/cpufreq/scaling_min_freq
chown -h root.system devices/system/cpu/cpu[1-3]/online
chmod 664 devices/system/cpu/cpu[1-3]/online
It is indeed required just to alter this script and you can enable all 4 cores with "ondemand" governor, scaling 600-738MHz and GPU scaling 200-450MHz using "msm-adreno-tz" governor:
(and this requires root of course)

Code:
#!/system/bin/sh

PATH=/system/bin

cd /sys
echo 4 > module/lpm_levels/enable_low_power/l2
echo 1 > module/msm_pm/modes/cpu0/power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu1/power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu2/power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu3/power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu0/standalone_power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu1/standalone_power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu2/standalone_power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu3/standalone_power_collapse/suspend_enabled
echo 1 > module/msm_pm/modes/cpu0/standalone_power_collapse/idle_enabled
echo 1 > module/msm_pm/modes/cpu1/standalone_power_collapse/idle_enabled
echo 1 > module/msm_pm/modes/cpu2/standalone_power_collapse/idle_enabled
echo 1 > module/msm_pm/modes/cpu3/standalone_power_collapse/idle_enabled
echo 1 > module/msm_pm/modes/cpu0/power_collapse/idle_enabled
echo 1 > module/msm_pm/modes/cpu1/power_collapse/idle_enabled
echo 1 > module/msm_pm/modes/cpu2/power_collapse/idle_enabled
echo 1 > module/msm_pm/modes/cpu3/power_collapse/idle_enabled
governor="ondemand"
scaling_min_freq="600000"
if [[ `grep "oem_perf_change" /proc/cmdline` ]];then
    if [[ `grep "oem_perf_on" /proc/cmdline` ]];then
        oem_perf_stats="1"
    else
        oem_perf_stats="0"
    fi
    echo -n $oem_perf_stats > /factory/oem_perf_stats
fi
echo $governor > devices/system/cpu/cpu0/cpufreq/scaling_governor
echo $governor > devices/system/cpu/cpu1/cpufreq/scaling_governor
echo $governor > devices/system/cpu/cpu2/cpufreq/scaling_governor
echo $governor > devices/system/cpu/cpu3/cpufreq/scaling_governor
#below ondemand parameters can be tuned
echo 50000 > devices/system/cpu/cpufreq/ondemand/sampling_rate
echo 90 > devices/system/cpu/cpufreq/ondemand/up_threshold
echo 1 > devices/system/cpu/cpufreq/ondemand/io_is_busy
echo 2 > devices/system/cpu/cpufreq/ondemand/sampling_down_factor
echo 10 > devices/system/cpu/cpufreq/ondemand/down_differential
echo 70 > devices/system/cpu/cpufreq/ondemand/up_threshold_multi_core
echo 10 > devices/system/cpu/cpufreq/ondemand/down_differential_multi_core
echo 787200 > devices/system/cpu/cpufreq/ondemand/optimal_freq
echo 300000 > devices/system/cpu/cpufreq/ondemand/sync_freq
echo 80 > devices/system/cpu/cpufreq/ondemand/up_threshold_any_cpu_load
echo $scaling_min_freq > devices/system/cpu/cpu0/cpufreq/scaling_min_freq
echo $scaling_min_freq > devices/system/cpu/cpu1/cpufreq/scaling_min_freq
echo $scaling_min_freq > devices/system/cpu/cpu2/cpufreq/scaling_min_freq
echo $scaling_min_freq > devices/system/cpu/cpu3/cpufreq/scaling_min_freq
echo 787200 > devices/system/cpu/cpu0/cpufreq/scaling_max_freq
echo 787200 > devices/system/cpu/cpu1/cpufreq/scaling_max_freq
echo 787200 > devices/system/cpu/cpu2/cpufreq/scaling_max_freq
echo 787200 > devices/system/cpu/cpu3/cpufreq/scaling_max_freq
#Below entries are to set the GPU frequency and DCVS governor
echo 450000000 > class/kgsl/kgsl-3d0/devfreq/max_freq
echo 200000000 > class/kgsl/kgsl-3d0/devfreq/min_freq
echo msm-adreno-tz > class/kgsl/kgsl-3d0/devfreq/governor
chown -h system devices/system/cpu/cpu[0-3]/cpufreq/scaling_max_freq
chown -h system devices/system/cpu/cpu[0-3]/cpufreq/scaling_min_freq
chown -h root.system devices/system/cpu/cpu[0-3]/online
chmod 664 devices/system/cpu/cpu[0-3]/online
(both files also attached to this post)

To exchange files in your watch, you can easily use following bash script in linux:

First push desired file into sdcard and go to ADB shell:
Code:
adb push init.asus.post_boot.sh /sdcard/
adb shell
In ADB shell remount system to RW, replace the file and fix privileges, than remount system back to RO:
Code:
su
mount -o rw,remount /system
mv /sdcard/init.asus.post_boot.sh /system/bin/
chown root:shell /system/bin/init.asus.post_boot.sh
chmod 755 /system/bin/init.asus.post_boot.sh
mount -o ro,remount /system
Update 2018/09/05:
In case you want to experiment, I'm also sending "full_power" script, setting all cores to max frequency and performance governor. There should be no issues, except probably less battery life. Just test yourself, how battery life is affected if it is affected at all. Just unpack the zip file, rename the sh script from init.asus.post_boot_full_power.sh to init.asus.post_boot.sh. Rest of the procedure is still the same.
Without kernel sources, this is probably the maximum performance you can get from the watch. Obtaining kernel sources we might get up still twice of current maximum, as the HW is there, but locked on kernel level.
Attached Files
File Type: zip init.asus.post_boot.zip - [Click for QR Code] (1.7 KB, 706 views)
File Type: zip init.asus.post_boot_full_power.sh.zip - [Click for QR Code] (737 Bytes, 324 views)
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6th June 2018, 06:40 PM |#2  
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I just swapped the files and I'll give this a try over the next few days. It would be awesome to destroy lag without needing a kernel tweak app to make it happen. You are the man!

Update: I followed your directions, then I wiped cache and dalvik in TWRP. I have only used the watch for a few minutes with this tweak and it is noticeably faster/smoother already. Text messages display lightning fast after being received on the phone. I'm currently on WiFi in my office. The times I notice most lag on my watch is when I'm on 4G, have music playing, and get a call. The phone may ring for 5-10 seconds before the watch displays. I'm excited to see how helpful this tweak is under those conditions. I'll know later today and keep you posted.
7th June 2018, 02:48 PM |#3  
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I have not experienced any Bluetooth lag since enabling this. This is a must have mod. Thanks for this!
7th June 2018, 06:07 PM |#4  
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Glad to hear that @CVertigo1. This is just simple SW enablement of things already present in kernel, so even no cache cleans are required. You can play with it on the go even without watch restart.

Amazing will be getting some kernel with much more CPU freq. steps, like 300-768 or even to 1.2GHz (yes, our chip is capable doing so, it is just not enabled in kernel). With proper governor battery will be still ok, resting CPU most of the time in low clocks. It is pity we have great HW, but it is taken out from us with stock kernel.
7th June 2018, 06:13 PM |#5  
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It would be nice if Asus would upload the kernel source for AW2.0.
7th June 2018, 06:37 PM |#6  
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Quote:
Originally Posted by CVertigo1

It would be nice if Asus would upload the kernel source for AW2.0.

Well we do have latest kernel source
https://www.asus.com/us/ZenWatch/ASU...Desk_Download/
Or directly here:
http://dlcdnet.asus.com/pub/ASUS/Wea...kernel-src.zip

We just need some handy guy able to compile it and add more governors and frequencies. That is something what overlapping my skills.
7th June 2018, 06:44 PM |#7  
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That is the latest kernel source for 1.5. They have not released their source for 2.0, nor any firmware for 2.0. I have contacted Asus about it multiple times and none of their reps have any idea what I'm talking about.
7th June 2018, 06:46 PM |#8  
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Quote:
Originally Posted by CVertigo1

That is the latest kernel source for 1.5. They have not released their source for 2.0, nor any firmware for 2.0. I have contacted Asus about it multiple times and none of their reps have any idea what I'm talking about.

Ah, I see I thought 2017/05/12 stated as a release day was after AW20 concluding this had to be the new one. Pity.
7th June 2018, 08:44 PM |#9  
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Maybe they'll release it eventually...at an Asus speed, like next year.
12th June 2018, 04:07 AM |#10  
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please help me(rom Sparrow_7.1.1_Debloat ROM ):
adb shell
sparrow:/ $ su
Permission denied
12th June 2018, 08:38 AM |#11  
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Quote:
Originally Posted by htduy11

please help me(rom Sparrow_7.1.1_Debloat ROM ):
adb shell
sparrow:/ $ su
Permission denied

Hi there, you are missing super user in your ROM. Did you installed SuperSU and Busybox thru TWRP after flashing the ROM?
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