traceviewify

Converts .cpuprofile format to trace viewer JSON object format to allow analysing the data in chrome://tracing.

var traceviewify = require('traceviewify');
var cpuprofile = require('./fixtures/fibonacci.cpuprofile');
 
var traceviewObjectFormat = traceviewify(cpuprofile); 

Screenshots

The screenshot above shows chrome://tracing timeline and sunburst of traceviewified data

The screenshot above shows DevTools with .cpuprofile from which the traceview was generated

Usage

cat some.cpuprofile | traceviewify > trace.json

Then load it into chrome://tracing.

Installation

npm install traceviewify

DTrace

A simple DTrace script was also added which generates trace viewer events. The resulting JSON can be directly imported into chrome://tracing.

API

traceviewify(cpuprofile, opts) → {Object}

Converts given cpuprofile object to a trace viewer JSON object.

Parameters:

Name	Type	Argument	Description
cpuprofile	Object		as produced by Chrome DevTools or cpuprofilify
opts	Object	<optional>	Properties Name Type Description pid number sets process id tid number sets thread id cpu number sets CPU number

Source:

• index.js , lineno 12

Returns:

trace viewer JSON object

Type

Object

generated with docme

License

MIT