开发者

Android: is there any tool for profiling native code?

I have only found one profiling tool - http://code.goog开发者_如何学Gole.com/p/android-ndk-profiler/. Wasn't able to get it working so far, so I wonder if there are other tools available. I need to profile on a physical device, as my application doesn't even work on emulator.


It is not easy to make the Android-NDK profiler work. You need to follow the steps here thoroughly.

Here are some tips that led me to success:

  • Make sure your android.mk is correct and that you export the NDK_MODULE_PATH.
  • Use correctly the following functions

    monstartup("your_lib.so");

    moncleanup();

  • If the gmon.out is generated now you need to pull it from the device, but not to anywhere in your PC. For me it only works if I go to the application's folder (where jni, obj, res and other folders are) and I do:

    console$ adb pull sdcard/gmon.out

  • Then run gprof. Try will all the versions in your NDK toolchains. For me only one worked, this one:

    console$ ~/Libraries/android-ndk-r9/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gprof obj/local/armeabi-v7a/libxxxx.so > profile.txt


The Shiny profiler is platform independent, it runs anywhere and it does not have any dependencies besides a standard C++ compiler. In its more simple usage, all you need to do is add a macro at the beginning of all functions and methods (or at least those that you want to profile).


Intel VTune Amplifier. This profiler allows you to collect hotspots with stacks on Android devices without root or any OS modification. Here is simple guide: http://software.intel.com/en-us/articles/using-intel-vtune-amplifier-on-non-rooted-android-devices


In the NDK r13b there is a new tool called simpleperf

0

上一篇:

下一篇:

精彩评论

暂无评论...
验证码 换一张
取 消

最新问答

问答排行榜