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  > nul

% @循环执行脚本

pause

2.进程/线程 性能信息：

.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>
.查看某个进程里所有线程
# ps -A | grep camera

cameraserver             binder_ioctl_write_read  S android.hardware.camera.provider@2.4-service_64
cameraserver              binder_ioctl_write_read  S cameraserver

# ps -T 642

USER           PID   TID  PPID     VSZ    RSS WCHAN            ADDR S CMD
cameraserver                binder_io+           S provider@2.4-se
cameraserver                poll_sche+           S provider@2.4-se
cameraserver                futex_wai+           S SyncManager_0
cameraserver                poll_sche+           S provider@2.4-se
cameraserver               futex_wai+           S provider@2.4-se
cameraserver               futex_wai+           S provider@2.4-se
cameraserver               futex_wai+           S provider@2.4-se
cameraserver               futex_wai+           S provider@2.4-se
cameraserver               futex_wai+           S provider@2.4-se
cameraserver               futex_wai+           S provider@2.4-se
cameraserver               futex_wai+           S provider@2.4-se
cameraserver               futex_wai+           S provider@2.4-se
cameraserver               poll_sche+           S provider@2.4-se
cameraserver               poll_sche+           S provider@2.4-se
cameraserver               binder_io+           S HwBinder:642_1
cameraserver               binder_io+           S HwBinder:642_2
cameraserver               binder_io+           S HwBinder:642_3
cameraserver               binder_io+           S HwBinder:642_4
cameraserver               poll_sche+           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 ) size:
dmabuf642                   

.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

.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