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cli-profile

v1.0.1

Published

profiling tool for CLI tools

Downloads

6

Vulnerabilities

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  • 0Low

Links

Git

Maintainers

benglbengl

Keywords

cliprofilingprofilecpu

Readme

cli-profile

cli-profile is a simple wrapper around v8-profiler, making it easy to use for CLI tools in node.

Usage

Invoke it as if it's node. For example, to profile an npm install:

$ cli-profile `which npm` install

All the arguments are passed to program you're profiling. This will then generate a timestamped .cpuprofile file in the current directory, which you can then load up into Chrome Dev Tools, or use flamegraph.

To generate a flamegraph from a cpu profile:

$ npm i -g flamegraph
$ cat *.cpuprofile | flamegraph -t cpuprofile > graph.svg

The profile will run from the time the program starts until either process.exit is called or the beforeExit event is emitted on process. This corresponds to the lifetime of the program being profiled.

License

MIT. See LICENSE.txt