xhprof

Introduction

This is a port of facebook/xhprof to nodejs

It is intended to promote the creation of better UI's for XHProf data.

Writing of XHProf data is not supported.

Dependencies

node-xhprof requires that graphviz be installed on your system (specifically the dot command)

RHEL/Centos/etc:

yum install graphviz

Debian/Ubuntu/etc: (need to confirm package name)

apt-get install graphviz

Install

npm install xhprof

Usage

Basic generation of a report from XHProf data saved in a file:

var fs = require('fs');
var xhprof = new (require('xhprof'))({adapter: {type: 'file'}, report: 'default'});

xhprof.report.getXHProfReport({run: 'abc1234', params: {}}, function (html) {
  fs.writeFileSync('./report.html', html);
  process.exit();
});

Generate a callgraph from XHProf data saved in a file:

var fs = require('fs');
var xhprof = new (require('xhprof'))({adapter: {type: 'file'}});

var runId = '53235ace524be';
var type = 'jpg';
var threshold = 0.01;
var func = null;
var source = null;
var criticalPath = true;

xhprof.callgraph.renderImage(runId, type, threshold, func, source, criticalPath, function (err, imageStream) {
  if (err) {
    console.log(err.track || err);
    process.exit();
  }

  var outStream = fs.createWriteStream(__dirname + '/callgraph.' + type, {flags: 'w'});

  imageStream.pipe(outStream);

  outStream.on('close', function () {
    process.exit();
  });

  //
  // error handling
  //
  outStream.on('error', function (err) {
    console.log('outStream.error');
    console.log(err);
    process.exit();
  });

  imageStream.on('error', function (err) {
    console.log('imageStream.error');
    console.log(err);
    process.exit();
  });
});

See tests for more examples.

Licence

Copyright (c) 2014 Sazze, Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.`