FlameGraph.md

centos

yum install perf -y yum install gcc -y yum install gcc-c++ yum install cmake -y

ubuntu

apt install linux-tools-generic apt install linux-tools-common

FlameGraph

参考 http://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html#Java

export JAVA_HOME=/root/jdk1.8.0_181 export PATH=$JAVA_HOME/bin:$PATH git clone --depth=1 https://github.com/jrudolph/perf-map-agent cd perf-map-agent cmake . make bin/create-links-in /usr/bin

git clone https://github.com/brendangregg/FlameGraph.git export FLAMEGRAPH_DIR=/root/git/FlameGraph

jvm启动参数需要增加

-XX:+PreserveFramePointer

perf-java-flames 进程号