BPFtrace动态跟踪工具

source install

git clone bpftrace:

git clone https://github.com/iovisor/bpftrace.git
git checkout -b v0.16.0
git submodule update --init --recursive

depends

查看宿主机已安装llvm版本：

dpkg -l | grep libllvm

结果输出如下：

ii  libllvm11:amd64                               1:11.0.1-2                                 amd64        Modular compiler and toolchain technologies, runtime library

下方安装llvm、clang时版本需要选定为11。

sudo apt-get install -y \
bison \
cmake \
flex \
g++ \
git \
libelf-dev \
zlib1g-dev \
libfl-dev \
systemtap-sdt-dev \
binutils-dev \
libcereal-dev \
llvm-11-dev \
llvm-11-runtime \
libclang-11-dev \
clang-11 \
libpcap-dev \
libgtest-dev \
libgmock-dev \
asciidoctor

cmake build and install

cd bpftrace
mkdir build
cd build
../build-libs.sh
cmake -DBUILD_TESTING=OFF -DCMAKE_BUILD_TYPE=Release .. # 此处关闭单元测试，是因为单元测试跑不过
make -j8
sudo make install

Environment variable configuration

echo "export PATH=$PATH:/usr/local/share/bpftrace/tools" >> /etc/profile

add /usr/local/share/bpftrace/tools to /etc/sudoers:

sudo visudo

Defaults        secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/share/bpftrace/tools"

Get started

sudo bpftrace -l
sudo execsnoop.bt

More

• https://github.com/iovisor/bpftrace.git
• bpftrace Install
• BPF之巅--洞悉Linux系统和应用性能
• BPF之巅--洞悉Linux系统和应用性能 Brendan Gregg
• BPF.Performance.Tools.2019.12.pdf

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