Skip to content

add totes; use rolling average for repaint rate #134

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 2 commits into
base: gh-pages
Choose a base branch
from
Open

add totes; use rolling average for repaint rate #134

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
886178c
display tweak; format a few files; use rolling average for repaint rate
aaronshaf Oct 17, 2018
5a77757
add totes; make urls in list more local-friendly
aaronshaf Oct 17, 2018
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
380 changes: 197 additions & 183 deletions ENV.js
View file
Open in desktop

Large diffs are not rendered by default.

200 changes: 101 additions & 99 deletions lib/memory-stats.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,103 +3,105 @@
* @author jetienne / http://jetienne.com/
* @author paulirish / http://paulirish.com/
*/
var MemoryStats = function (){

var msMin = 100;
var msMax = 0;

var container = document.createElement( 'div' );
container.id = 'stats';
container.style.cssText = 'width:80px;opacity:0.9;cursor:pointer';

var msDiv = document.createElement( 'div' );
msDiv.id = 'ms';
msDiv.style.cssText = 'padding:0 0 3px 3px;text-align:left;background-color:#020;';
container.appendChild( msDiv );

var msText = document.createElement( 'div' );
msText.id = 'msText';
msText.style.cssText = 'color:#0f0;font-family:Helvetica,Arial,sans-serif;font-size:9px;font-weight:bold;line-height:15px';
msText.innerHTML= 'Memory';
msDiv.appendChild( msText );

var msGraph = document.createElement( 'div' );
msGraph.id = 'msGraph';
msGraph.style.cssText = 'position:relative;width:74px;height:30px;background-color:#0f0';
msDiv.appendChild( msGraph );

while ( msGraph.children.length < 74 ) {

var bar = document.createElement( 'span' );
bar.style.cssText = 'width:1px;height:30px;float:left;background-color:#131';
msGraph.appendChild( bar );

}

var updateGraph = function ( dom, height, color ) {

var child = dom.appendChild( dom.firstChild );
child.style.height = height + 'px';
if( color ) child.style.backgroundColor = color;

}

var perf = window.performance || {};
// polyfill usedJSHeapSize
if (!perf && !perf.memory){
perf.memory = { usedJSHeapSize : 0 };
}
if (perf && !perf.memory){
perf.memory = { usedJSHeapSize : 0 };
}

// support of the API?
if( perf.memory.totalJSHeapSize === 0 ){
console.warn('totalJSHeapSize === 0... performance.memory is only available in Chrome .')
}

// TODO, add a sanity check to see if values are bucketed.
// If so, reminde user to adopt the --enable-precise-memory-info flag.
// open -a "/Applications/Google Chrome.app" --args --enable-precise-memory-info

var self = this;
var memory = 0;
var lastTime = Date.now();
var lastUsedHeap= perf.memory.usedJSHeapSize;
return {
domElement: container,

update: function () {

// refresh only 30time per second
if( Date.now() - lastTime < 1000/30 ) return;
lastTime = Date.now()

var delta = perf.memory.usedJSHeapSize - lastUsedHeap;
lastUsedHeap = perf.memory.usedJSHeapSize;
var color = delta < 0 ? '#830' : '#131';

var ms = perf.memory.usedJSHeapSize;
msMin = Math.min( msMin, ms );
msMax = Math.max( msMax, ms );

self.memory = bytesToSize(ms, 2);
msText.textContent = "Mem: " + self.memory;

var normValue = ms / (30*1024*1024);
var height = Math.min( 30, 30 - normValue * 30 );
updateGraph( msGraph, height, color);

function bytesToSize( bytes, nFractDigit ){
var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
if (bytes == 0) return 'n/a';
nFractDigit = nFractDigit !== undefined ? nFractDigit : 0;
var precision = Math.pow(10, nFractDigit);
var i = Math.floor(Math.log(bytes) / Math.log(1024));
return Math.round(bytes*precision / Math.pow(1024, i))/precision + ' ' + sizes[i];
};
}

}

var MemoryStats = function() {
var msMin = 100;
var msMax = 0;

var container = document.createElement("div");
container.id = "stats";
container.style.cssText = "width:80px;opacity:0.9;cursor:pointer";

var msDiv = document.createElement("div");
msDiv.id = "ms";
msDiv.style.cssText =
"padding:0 0 3px 3px;text-align:left;background-color:#020;";
container.appendChild(msDiv);

var msText = document.createElement("div");
msText.id = "msText";
msText.style.cssText =
"color:#0f0;font-family:Helvetica,Arial,sans-serif;font-size:9px;font-weight:bold;line-height:15px";
msText.innerHTML = "Memory";
msDiv.appendChild(msText);

var msGraph = document.createElement("div");
msGraph.id = "msGraph";
msGraph.style.cssText =
"position:relative;width:74px;height:30px;background-color:#0f0";
msDiv.appendChild(msGraph);

while (msGraph.children.length < 74) {
var bar = document.createElement("span");
bar.style.cssText =
"width:1px;height:30px;float:left;background-color:#131";
msGraph.appendChild(bar);
}

var updateGraph = function(dom, height, color) {
var child = dom.appendChild(dom.firstChild);
child.style.height = height + "px";
if (color) child.style.backgroundColor = color;
};

var perf = window.performance || {};
// polyfill usedJSHeapSize
if (!perf && !perf.memory) {
perf.memory = { usedJSHeapSize: 0 };
}
if (perf && !perf.memory) {
perf.memory = { usedJSHeapSize: 0 };
}

// support of the API?
if (perf.memory.totalJSHeapSize === 0) {
console.warn(
"totalJSHeapSize === 0... performance.memory is only available in Chrome ."
);
}

// TODO, add a sanity check to see if values are bucketed.
// If so, reminde user to adopt the --enable-precise-memory-info flag.
// open -a "/Applications/Google Chrome.app" --args --enable-precise-memory-info

var self = this;
var memory = 0;
var lastTime = Date.now();
var lastUsedHeap = perf.memory.usedJSHeapSize;
return {
domElement: container,

update: function() {
// refresh only 30time per second
if (Date.now() - lastTime < 1000 / 30) return;
lastTime = Date.now();

var delta = perf.memory.usedJSHeapSize - lastUsedHeap;
lastUsedHeap = perf.memory.usedJSHeapSize;
var color = delta < 0 ? "#830" : "#131";

var ms = perf.memory.usedJSHeapSize;
msMin = Math.min(msMin, ms);
msMax = Math.max(msMax, ms);

self.memory = bytesToSize(ms, 2);
msText.textContent = "Mem: " + self.memory;

var normValue = ms / (30 * 1024 * 1024);
var height = Math.min(30, 30 - normValue * 30);
updateGraph(msGraph, height, color);

function bytesToSize(bytes, nFractDigit) {
var sizes = ["Bytes", "KB", "MB", "GB", "TB"];
if (bytes == 0) return "n/a";
nFractDigit = nFractDigit !== undefined ? nFractDigit : 0;
var precision = Math.pow(10, nFractDigit);
var i = Math.floor(Math.log(bytes) / Math.log(1024));
return (
Math.round((bytes * precision) / Math.pow(1024, i)) / precision +
" " +
sizes[i]
);
}
}
};
};
156 changes: 97 additions & 59 deletions lib/monitor.js
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,69 +1,107 @@
var Monitoring = Monitoring || (function() {

var stats = new MemoryStats();
stats.domElement.style.position = 'fixed';
stats.domElement.style.right = '0px';
stats.domElement.style.bottom = '0px';
document.body.appendChild( stats.domElement );
requestAnimationFrame(function rAFloop(){
var Monitoring =
Monitoring ||
(function() {
var stats = new MemoryStats();
stats.domElement.style.position = "fixed";
stats.domElement.style.right = "0px";
stats.domElement.style.bottom = "0px";
document.body.appendChild(stats.domElement);
requestAnimationFrame(function rAFloop() {
stats.update();
requestAnimationFrame(rAFloop);
});
});

var RenderRate = function () {
var container = document.createElement( 'div' );
container.id = 'stats';
container.style.cssText = 'width:150px;opacity:0.9;cursor:pointer;position:fixed;right:80px;bottom:0px;';
var RenderRate = function() {
var container = document.createElement("div");
container.id = "stats";
container.style.cssText =
"width:150px;opacity:0.9;cursor:pointer;position:fixed;right:80px;bottom:0px;";

var msDiv = document.createElement( 'div' );
msDiv.id = 'ms';
msDiv.style.cssText = 'padding:0 0 3px 3px;text-align:left;background-color:#020;';
container.appendChild( msDiv );
var msDiv = document.createElement("div");
msDiv.id = "ms";
msDiv.style.cssText =
"padding:0 0 3px 3px;text-align:left;background-color:#020;";
container.appendChild(msDiv);

var msText = document.createElement( 'div' );
msText.id = 'msText';
msText.style.cssText = 'color:#0f0;font-family:Helvetica,Arial,sans-serif;font-size:9px;font-weight:bold;line-height:15px';
msText.innerHTML= 'Repaint rate: 0/sec';
msDiv.appendChild( msText );
var msText = document.createElement("div");
msText.id = "msText";
msText.style.cssText =
"color:#0f0;font-family:Helvetica,Arial,sans-serif;font-size:9px;font-weight:bold;line-height:15px";
msText.innerHTML = "Repaint rate: 0/sec";
msDiv.appendChild(msText);

var self = this;
var rate = 0;
var bucketSize = 20;
var bucket = [];
var lastTime = Date.now();
return {
domElement: container,
ping: function () {
var start = lastTime;
var stop = Date.now();
var rate = 1000 / (stop - start);
if (rate == Infinity) {
return;
}
bucket.push(rate);
if (bucket.length > bucketSize) {
bucket.shift();
var self = this;
var rate = 0;
var bucketSize = 200;
var bucket = [];
var lastTime = performance ? performance.now() : Date.now();
return {
domElement: container,
ping: function() {
var start = lastTime;
var stop = performance ? performance.now() : Date.now();
var rate = 1000 / (stop - start);
if (rate == Infinity) {
return;
}
bucket.push(rate);
if (bucket.length > bucketSize) {
bucket.shift();
}
var sum = 0;
const tmp = sma(bucket, Math.floor(bucketSize / 10), Number);
for (var i = 0; i < tmp.length; i++) {
sum = sum + tmp[i];
}
self.rate = sum / tmp.length;
if (isNaN(self.rate) === false) {
msText.textContent =
"Repaint rate: " + self.rate.toFixed(2) + "/sec";
}
lastTime = stop;
},
rate: function() {
return self.rate;
}
var sum = 0;
for (var i = 0; i < bucket.length; i++) {
sum = sum + bucket[i];
}
self.rate = (sum / bucket.length);
msText.textContent = "Repaint rate: " + self.rate.toFixed(2) + "/sec";
lastTime = stop;
},
rate: function () {
return self.rate;
}
}
};
};
};

var renderRate = new RenderRate();
document.body.appendChild(renderRate.domElement);

return {
memoryStats: stats,
renderRate: renderRate
};
})();

//The MIT License (MIT)
// Copyright (c) 2017 Brian Woodward
// https://github.com/doowb/sma/blob/master/LICENSE

// simple moving average
function sma(arr, range, format) {
if (!Array.isArray(arr)) {
throw TypeError("expected first argument to be an array");
}

var renderRate = new RenderRate();
document.body.appendChild( renderRate.domElement );
var num = range || arr.length;
var res = [];
var len = arr.length + 1;
var idx = num - 1;
while (++idx < len) {
res.push(avg(arr, idx, num));
}
return res;
}

return {
memoryStats: stats,
renderRate: renderRate
};
function avg(arr, idx, range) {
return sum(arr.slice(idx - range, idx)) / range;
}

})();
function sum(arr) {
var len = arr.length;
var num = 0;
while (len--) num += Number(arr[len]);
return num;
}
Loading