TEST: Added NaN cases to the missingPoints test.
[dygraphs.git] / phantom-perf.js
... / ...
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1// dygraphs command-line performance benchmark.
2//
3// Invoke as:
4//
5// phantomjs phantom-perf.js 1000 100 5
6//
7// If the test succeeds, it will print out something like:
8//
9// 1000/100/5: 1309.4+/-43.4 ms (1284, 1245, 1336, 1346, 1336)
10//
11// This is mean +/- standard deviation, followed by a list of the individual
12// times for each repetition, in milliseconds.
13
14var system = require('system'),
15 fs = require('fs');
16
17var tmpfile = "tmp-dygraph-test-params.js";
18var url = 'tests/dygraph-many-points-benchmark.html';
19
20function fail(msg){
21 console.warn(msg);
22 phantom.exit(1);
23}
24
25function assert(condition, msg){
26 if (condition) return;
27 fail(msg);
28}
29
30var config_file_template =
31 "document.getElementById('points').value = (points);\n" +
32 "document.getElementById('series').value = (series);\n" +
33 "document.getElementById('repetitions').value = (repetitions);\n";
34
35var RunBenchmark = function(points, series, repetitions, done_callback) {
36 var page = require('webpage').create();
37
38 // page.evalute() is seriously locked down.
39 // This was the only way I could find to pass the parameters to the page.
40 fs.write(tmpfile,
41 config_file_template
42 .replace("(points)", points)
43 .replace("(series)", series)
44 .replace("(repetitions)", repetitions),
45 "w");
46
47 page.open(url, function(status) {
48 if (status !== 'success') {
49 console.warn('Page status: ' + status);
50 console.log(page);
51 phantom.exit();
52 }
53
54 assert(page.injectJs(tmpfile), "Unable to inject JS.");
55 fs.remove(tmpfile);
56
57 var start = new Date().getTime();
58 var rep_times = page.evaluate(function() {
59 var rep_times = updatePlot();
60 return rep_times;
61 });
62 var end = new Date().getTime();
63 var elapsed = (end - start) / 1000;
64 done_callback(rep_times);
65 });
66};
67
68
69var points, series, repetitions;
70if (4 != system.args.length) {
71 console.warn('Usage: phantomjs phantom-driver.js (points) (series) (repititions)');
72 phantom.exit();
73}
74
75points = parseInt(system.args[1]);
76series = parseInt(system.args[2]);
77repetitions = parseInt(system.args[3]);
78assert(points != null, "Couldn't parse " + system.args[1]);
79assert(series != null, "Couldn't parse " + system.args[2]);
80assert(repetitions != null, "Couldn't parse " + system.args[3]);
81
82
83RunBenchmark(points, series, repetitions, function(rep_times) {
84 var mean = 0.0, std = 0.0;
85 rep_times.forEach(function(x) { mean += x; } );
86 mean /= rep_times.length;
87 rep_times.forEach(function(x) { std += Math.pow(x - mean, 2); });
88 std = Math.sqrt(std / (rep_times.length - 1));
89
90 console.log(points + '/' + series + '/' + repetitions + ': ' +
91 mean.toFixed(1) + '+/-' + std.toFixed(1) + ' ms (' +
92 rep_times.join(', ') + ')');
93 phantom.exit();
94});