1.安裝FlameGraph
wget https://github.com/brendangregg/FlameGraph/archive/master.zip
unzip master.zip
sudo mv FlameGraph-master/ /opt/FlameGraph
2.添加到環(huán)境變量
export PATH=$PATH:/opt/FlameGraph
3.火焰圖生成腳本
#!/bin/sh
if [ $# -lt 1 ]; then
echo 'input pid'
exit 1
fi
rm -f perf.*
perf record -F 99 -p $1 -g -- sleep 60
perf script -i perf.data &> perf.unfold
stackcollapse-perf.pl perf.unfold &> perf.folded
flamegraph.pl perf.folded > perf.svg