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
