René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"pprof 使用","articleBody":"pprof\r\n======\r\n\r\n\r\n### 基本使用\r\n\r\n查看堆栈调用信息\r\n```bash\r\n$ go tool pprof http://localhost:6060/debug/pprof/heap\r\n```\r\n\r\n查看协程信息\r\n```bash\r\n$ go tool pprof http://localhost:6060/debug/pprof/goroutine\r\n```\r\n\r\n查看30s内的 CPU 信息\r\n```bash\r\n$ go tool pprof http://localhost:6060/debug/pprof/profile?seconds=30\r\n```\r\n\r\n其他\r\n```bash\r\n$ go tool pprof http://localhost:6060/debug/pprof/threadcreate\r\n\r\n$ go tool pprof http://localhost:6060/debug/pprof/block\r\n\r\n$ go tool pprof http://localhost:6060/debug/pprof/mutex\r\n\r\n$ go tool pprof http://localhost:6060/debug/pprof/trace?seconds=5\r\n```\r\n\r\n### 扩展使用\r\n排查 `golang` 程序内存泄露.\r\n\r\n获取 A 时间点的堆栈 profile\r\n```bash\r\n$ curl -s http://localhost:6060/debug/pprof/heap \u003e A.heap\r\n```\r\n\r\n过一段时间后，内存开始泄露了，再获取 B 时间点的堆栈 profile\r\n```bash\r\n$ curl -s http://localhost:6060/debug/pprof/heap \u003e B.heap\r\n```\r\n\r\n比较 A, B 时间点的堆栈差异\r\n```bash\r\n$ go tool pprof --base A.heap B.heap\r\n```\r\n\r\n使用 `web` 命令生成一个 SVG 文件\r\n```bash\r\n(pprof) web\r\n```\r\n\r\n或者直接打开 web 界面\r\n```\r\n$ go tool pprof --http :9090 --base B.heap A.heap\r\n```\r\n\r\n\u003e 生成图表，需要安装 [Graphviz](https://graphviz.org/)\r\n\r\n### 参考\r\n[Profiling Go programs with pprof](https://jvns.ca/blog/2017/09/24/profiling-go-with-pprof/)\r\n[Hi, 使用多年的go pprof检查内存泄漏的方法居然是错的](https://colobu.com/2019/08/20/use-pprof-to-compare-go-memory-usage/)  \r\n\r\n","author":{"url":"https://github.com/codcodog","@type":"Person","name":"codcodog"},"datePublished":"2021-03-02T14:11:52.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/126/Blog/issues/126"}