Archived

This repo has officially been archived. Going forward consumption of Parse-Profile will be via TracerBench.

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A suite of CLI tools for generating and parsing CPUProfile's.

Usage

profile

The parent command that allows for running one of the subcommands below.

The primary usage would be:

# create a Chrome profile from a URL and save to a JSON file
$ ./bin/profile trace --url http://www.example.com --network 4g --cpu 4

# create a HAR file based on a URL
$ ./bin/profile create-archive --url http://www.example.com

# analyze the created profile
$ ./bin/profile analyze --file trace.json --report ./heuristics --event mark_meaningful_paint_end

Subcommands

trace

Does an automated trace of a webpage. Also takes network conditioner and CPU throttling options.

create-archive

Creates a subset of a HAR file for gather resource information and application version number.

analyze

Parses a CPU profile and aggregates time across heuristics. Can be vertically sliced with event names.

Additional subcommands

timeline

Parses a CPU profile and displays interesting events in chronological order

list-functions

Lists all the functions and source locations from a trace

summarize-css-parse

Aggregates CSS parsing time from a trace

summarize-js-eval

Aggregates JS Eval time from a trace

Development

To build:

yarn build

To run tests:

yarn test