How to Query GPU usage ratio on Android by ADB

Basic command

Qualcomm

Following command is used to query GPU busy ratio on Qualcomm SOC.

adb shell cat /sys/class/kgsl/kgsl-3d0/gpu_busy_percentage

MTK

Following command is used to query GPU idle ratio on MTK SOC.

adb shell cat /sys/module/ged/parameters/gpu_idle

Useful Script

Following script is used to query realtime GPU usage ratio every 0.1 second.

#!/bin/bash

manufacturer=`adb shell getprop ro.product.product.manufacturer`
if [ $manufacturer == "QUALCOMM" ]; then
	while true
	do 
		rst=`adb shell cat /sys/class/kgsl/kgsl-3d0/gpu_busy_percentage`
		rst=`echo  $rst |  awk '{ gsub(/%/,""); print $0 }' `
 
		echo -n "$rst "
		sleep 0.1
	done
else
	while true
	do 
		rst=`expr 100 -  $(adb shell cat /sys/module/ged/parameters/gpu_idle)`
		echo -n "$rst "
		sleep 0.1
	done
fi