代码性能分析工具

使用perf工具分析性能

 

可分析到驱动内部。请参考   https://blog.youkuaiyun.com/u014608280/article/details/80265718

 

使用gperf工具分析性能

 

这是Google工具  依赖于libunwind。需要先编译libunwind

#!/bin/bash
set -x

pushd libunwind-1.3.1

./configure --host=aarch64-linux-gnu --build=aarch64 --disable-static CFLAGS=-U_FORTRIFY_SOURCE --prefix=/my/install
if [ $? -ne 0 ]; then
    echo "configure failed"
    popd
    exit -1
fi

make -j4
if [ $? -ne 0 ]; then
    echo "make failed"
    popd
    exit -1
fi

make install
if [ $? -ne 0 ]; then
    echo "install failed"
    popd
    exit -1
fi

make clean

popd

再安装gperf

#!/bin/bash
set -x

pushd gperftools-2.7

install_path='/my/install'
./configure --host=aarch64-lin