node.js - Nodejs 进程挂起，我该如何调试它或收集转储？

Question

我在 Linux 上运行的 nodejs 进程现在挂了，CPU 是 100%。无论如何我可以调试它并找到原因吗？我需要收集转储吗？如何收集？谢谢。

Answer 1

有一个名为 why-is-node-running 的 npm 模块可以为您提供如下信息:

There are 4 known handle(s) keeping the process running and 0 unknown
Known handles:

# Timer
/Users/maf/dev/node_modules/why-is-node-running/example.js:6  - setInterval(function () {}, 1000)
/Users/maf/dev/node_modules/why-is-node-running/example.js:10 - createServer()

# TCP
/Users/maf/dev/node_modules/why-is-node-running/example.js:7  - server.listen(0)
/Users/maf/dev/node_modules/why-is-node-running/example.js:10 - createServer()

# TCP
/Users/maf/dev/node_modules/why-is-node-running/example.js:7  - server.listen(0)
/Users/maf/dev/node_modules/why-is-node-running/example.js:11 - createServer()

# Timer
/Users/maf/dev/node_modules/why-is-node-running/example.js:13 - setTimeout(function () {