record -F 2000 -g -p $pid; perf script -i perf.data > out.perf; stackcollapse-perf.pl out.perf > out.folded; flamegraph.pl out.folded > cpu.svg • 镜像修改 • 编译pilot-agent, envoy二进制后替换现有envoy镜像并配置到自定义deployment的image中，