Android：高通平台性能调试

1.GPU / CPU 信息打印脚本

gpu_cpu_info.bat

@echo off 
echo "==================GPU======================"
echo Used / Total：
adb shell cat /sys/class/kgsl/kgsl-3d0/gpubusy
echo Utilization rate:
adb shell cat /sys/class/kgsl/kgsl-3d0/gpu_busy_percentage
echo Max frequencies：
adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/max_freq
echo Min frequencies：
adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/min_freq
echo Available frequencies：
adb shell cat /sys/class/kgsl/kgsl-3d0/gpu_available_frequencies
echo Current frequencies：
adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/cur_freq
echo Available governors：
adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/available_governors
echo Governors：
adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/governor

echo "==================CPU======================"
echo Available frequencies：
adb shell cat 
echo Max frequencies：
adb shell cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
echo Min frequencies：
adb shell cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
echo Current frequencies：
adb shell cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
echo "==========================================="

ping 127.0.0.1 -n 3 > nul

%0 @循环执行脚本

pause

2.进程/线程性能信息：

1.打印进程的堆栈信息。从堆栈信息里可以通过.so辨别哪个线程是干什么的，从而在 top -t 的结果里去查找你想要的那个线程的 CPU 使用情况。
# debuggerd -b <pid>

2.查看某个进程里所有线程
# ps -A | grep camera

cameraserver   642     1  176344  50940 binder_ioctl_write_read 0 S android.hardware.camera.provider@2.4-service_64
cameraserver   902     1   40100  18452 binder_ioctl_write_read 0 S cameraserver

# ps -T 642

USER           PID   TID  PPID     VSZ    RSS WCHAN            ADDR S CMD
cameraserver   642   642     1  176344  50940 binder_io+          0 S provider@2.4-se
cameraserver   642   718     1  176344  50940 poll_sche+          0 S provider@2.4-se
cameraserver   642   754     1  176344  50940 futex_wai+          0 S SyncManager_0
cameraserver   642   755     1  176344  50940 poll_sche+          0 S provider@2.4-se
cameraserver   642  1535     1  176344  50940 futex_wai+          0 S provider@2.4-se
cameraserver   642  1547     1  176344  50940 futex_wai+          0 S provider@2.4-se
cameraserver   642  1549     1  176344  50940 futex_wai+          0 S provider@2.4-se
cameraserver   642  1550     1  176344  50940 futex_wai+          0 S provider@2.4-se
cameraserver   642  1551     1  176344  50940 futex_wai+          0 S provider@2.4-se
cameraserver   642  1552     1  176344  50940 futex_wai+          0 S provider@2.4-se
cameraserver   642  1553     1  176344  50940 futex_wai+          0 S provider@2.4-se
cameraserver   642  1554     1  176344  50940 futex_wai+          0 S provider@2.4-se
cameraserver   642  1555     1  176344  50940 poll_sche+          0 S provider@2.4-se
cameraserver   642  1562     1  176344  50940 poll_sche+          0 S provider@2.4-se
cameraserver   642  1582     1  176344  50940 binder_io+          0 S HwBinder:642_1
cameraserver   642  1583     1  176344  50940 binder_io+          0 S HwBinder:642_2
cameraserver   642  1584     1  176344  50940 binder_io+          0 S HwBinder:642_3
cameraserver   642  1585     1  176344  50940 binder_io+          0 S HwBinder:642_4
cameraserver   642  4586     1  176344  50940 poll_sche+          0 S HwBinder:642_1

　查看该进程ION Buffer情况：
　# cat /sys/kernel/debug/dma_buf/dmaprocs | grep 642

provider@2.4-se (PID 642) size: 315848
dmabuf642       2544            3


3.查看线程内存占用和CPU使用率
# top
 
参数含义：

PID 进程号

USER 用户名

PR 优先级

NI nice值。负值表示高优先级，正值表示低优先级m

RES 进程使用的、未被换出的物理内存大小，单位kb

SHR 共享内存大小，单位kb

S 进程状态。
D=不可中断的睡眠状态
R=运行
S=睡眠
T=跟踪/停止

Z=僵尸进程

%CPU CPU使用率

%MEM 进程使用的物理内存百分比

TIME+ 进程使用的CPU时间总计，单位1/100秒

4.查看指定程序（mediaserver）内存使用情况
# dumpsys meminfo mediaserver
 　　dumpsys [options]
              meminfo 显示内存信息
              cpuinfo 显示CPU信息
              account 显示accounts信息
              activity 显示所有的activities的信息
              window 显示键盘，窗口和它们的关系
              wifi 显示wifi信息