Golang FlameGraph（火焰图）

Posted 2023-05-11

参考技术A 运行上述程序后，使用如下命令生成CPU火焰图：
go-torch -u http://localhost:8888/debug/pprof/ -p > profile-local.svg
效果图如下：

生成内存火焰图：
go-torch -u http://localhost:8888/debug/pprof/heap -p > heap-local.svg
效果图如下：

也可以分步骤查看结果：

1.Centos7 使用报错
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "en_US.UTF-8",
LC_ALL = "en_US.UTF-8",
LC_PAPER = "en_US.UTF-8",
LC_MONETARY = "en_US.UTF-8",
LC_NUMERIC = "en_US.UTF-8",
LC_MEASUREMENT = "en_US.UTF-8",
LC_CTYPE = "en_US.UTF-8",
LC_TIME = "en_US.UTF-8",
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
解决方法：
export LC_ALL="C"

使用perf + FlameGraph生成进程火焰图

FlameGraph代码：https://github.com/cobblau/FlameGraph

 

使用方法

1，perf record --call-graph dwarf -p 12345

2，perf script | FlameGraph/stackcollapse-perf.pl | FlameGraph/flamegraph.pl > process.svg

 

使用其他工具如何生成火焰图的方法在FlameGraph的Readme只有详细的介绍