1、

查看软连接，只需要替换软连接的库即可

2、

系统性能测试工具：

\\10.10.10.164\Common_Repository\DDR相关工具

瑞芯微芯片专用芯片性能测试工具，支持RK全部芯片。

打印性能和cpu占用率指标示例（rk-msch-probe_XX工具使用方法参考文档）

$ rk-msch-probe_v1.06 -c rv1126 -f 924 & top -d 2

将CPU修改为性能模式：

echo performance > /sys/devices/system/cpu/cpufreq/policy0/scaling_governor

cat /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_cur_freq

rv1126 npu定频600：

cat /sys/devices/platform/ffbb0000.rkvenc/devfreq/ffbb0000.rkvenc/cur_freq

echo 600000000 > /sys/devices/platform/ffbc0000.npu/devfreq/ffbc0000.npu/min_freq

echo 600000000 > /sys/devices/platform/ffbc0000.npu/devfreq/ffbc0000.npu/max_freq

cat /sys/devices/platform/ffbc0000.npu/devfreq/ffbc0000.npu/cur_freq

3、

rv1126单个npu功能测试工具：

mediaserver -S -d -c ../share/mediaserver/rv1109-uvc/camera_nv12_rga_nn_link-facelandmark.conf

4、

打印帧率代码：

int64_t SystemTime2() {
  struct timespec t;
  t.tv_sec = t.tv_nsec = 0;
  clock_gettime(CLOCK_MONOTONIC, &t);
  return (int64_t)(t.tv_sec) * 1000 + t.tv_nsec / 1000000;
}

void DumpFps() {

  static int mFrameCount;
  static int mLastFrameCount = 0;
  static int mLastFpsTime = 0;
  static float mFps = 0;
  mFrameCount++;
  int64_t now = SystemTime2();
  int64_t diff = now - mLastFpsTime;
  if (diff > 500) {
    mFps = ((mFrameCount - mLastFrameCount) * 1000) / diff;
    mLastFpsTime = now;
    mLastFrameCount = mFrameCount;
    LOG("---mFps = %2.3f\n", mFps);
  }
}

5、

1109上面，设置定频和查看频率的命令(UAC测算CPU占用率的时候)：

查看cpu频率：cat /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_cur_freq

查看支持的频率：cat /sys/devices/system/cpu/cpufreq/policy0/scaling_available_frequencies

定频：echo userspace > /sys/devices/system/cpu/cpufreq/policy0/scaling_governor

设置频率1g: echo 1008000 > /sys/devices/system/cpu/cpufreq/policy0/scaling_setspeed

来源：https://blog.csdn.net/zhoudidong/article/details/107101929