[tools] improving callstats.html istructions and making callstats.py executable

BUG=

Review-Url: https://codereview.chromium.org/1964453002
Cr-Commit-Position: refs/heads/master@{#36173}
This commit is contained in:
cbruni 2016-05-11 05:32:27 -07:00 committed by Commit bot
parent 5fa1c61ee0
commit c4af1ba7e4

View File

@ -152,6 +152,10 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
cursor: pointer
}
.pageDetailTable tfoot td {
border-top: 1px grey solid;
}
#popover {
position: absolute;
transform: translateY(-50%) translateX(40px);
@ -198,9 +202,16 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
#popover table.compare .compare {
display: table-cell;
}
#popover .compare .time,
#popover .compare .version {
padding-left: 10px;
}
</style>
<script>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
"use strict"
google.charts.load('current', {packages: ['corechart']});
// Did anybody say monkeypatching?
if (!NodeList.prototype.forEach) {
@ -218,7 +229,11 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
function initialize() {
var original = $("column");
for (var i = 0; i < versions.length || i < 2; i++) {
var view = document.createElement('div');
view.id = 'view';
var i = 0;
versions.forEach((version) => {
if (!version.enabled) return;
// add column
var column = original.cloneNode(true);
column.id = "column_" + i;
@ -227,6 +242,7 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
select.id = "selectVersion_" + i;
// add all select options
versions.forEach((version) => {
if (!version.enabled) return;
var option = document.createElement("option");
option.textContent = version.name;
option.version = version;
@ -235,8 +251,9 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
// Fill in all page versions
select = column.querySelector(".pageVersion");
select.id = "select_" + i;
// add all select options
// add all pages
versions.forEach((version) => {
if (!version.enabled) return;
var optgroup = document.createElement("optgroup");
optgroup.label = version.name;
optgroup.version = version;
@ -248,8 +265,12 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
});
select.appendChild(optgroup);
});
$("view").appendChild(column);
}
view.appendChild(column);
i++;
});
var oldView = $('view');
oldView.parentNode.replaceChild(view, oldView);
var select = $('baseline');
removeAllChildren(select);
select.appendChild(document.createElement('option'));
@ -259,12 +280,28 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
option.version = version;
select.appendChild(option);
});
var versionSelectorList = $('results').querySelector('.versionSelector ul');
removeAllChildren(versionSelectorList);
versions.forEach((version) => {
var li = document.createElement('li');
var checkbox = document.createElement('input');
checkbox.type = 'checkbox';
checkbox.checked = version.enabled;
checkbox.version = version;
checkbox.addEventListener('click', handleToggleVersionEnable);
li.appendChild(checkbox);
li.appendChild(document.createTextNode(version.name));
versionSelectorList.appendChild(li);
});
$('results').querySelectorAll('#results > .hidden').forEach((node) => {
toggleCssClass(node, 'hidden', false);
});
}
function showPage(firstPage) {
var changeSelectedEntry = selectedEntry !== undefined
&& selectedEntry.page === selectedPage;
selectedPage = firstPage;
selectedPage.sort();
showPageInColumn(firstPage, 0);
@ -277,8 +314,12 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
index++;
}
});
if (changeSelectedEntry) {
showEntryDetail(selectedPage.getEntry(selectedEntry));
} else {
showImpactList(selectedPage);
}
}
function showPageInColumn(page, columnIndex) {
page.sort();
@ -318,10 +359,9 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
var oldTbody = table.querySelector('tbody');
var tbody = document.createElement('tbody');
var referencePage = selectedPage;
page.forEachSorted(selectedPage,
(parentEntry, entry, referenceEntry) => {
// Filter out entries that do not exist in the first column for the
// default view.
page.forEachSorted(selectedPage, (parentEntry, entry, referenceEntry) => {
// Filter out entries that do not exist in the first column for the default
// view.
if (baselineVersion === undefined && referenceEntry &&
referenceEntry.time == 0) {
return;
@ -330,11 +370,7 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
tbody.appendChild(tr);
tr.entry = entry;
tr.parentEntry = parentEntry;
if (!parentEntry) {
tr.className = 'parent'
} else {
tr.className = 'child'
}
tr.className = parentEntry === undefined ? 'parent' : 'child';
// Don't show entries that do not exist on the current page or if we
// compare against the current page
if (entry !== undefined && page.version !== baselineVersion) {
@ -376,7 +412,8 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
referenceEntry.count, 0);
} else {
// Display empty entry / baseline entry
if (entry !== undefined) {
var showBaselineEntry = entry !== undefined;
if (showBaselineEntry) {
if (!parentEntry) {
var node = td(tr, '<div class="toggle"></div>', 'position');
node.firstChild.addEventListener('click', handleToggleGroup);
@ -384,14 +421,17 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
td(tr, entry.position == 0 ? '' : entry.position, 'position');
}
td(tr, entry.name, 'name');
td(tr, ms(entry.time, false), 'value time');
td(tr, percent(entry.timePercent, false), 'value time');
td(tr, count(entry.count, false), 'value count');
} else {
td(tr, '-', 'position');
td(tr, '-', 'name');
}
td(tr, '-', 'value time');
td(tr, '-', 'value time');
td(tr, '-', 'value count');
}
}
});
table.replaceChild(tbody, oldTbody);
var versionSelect = column.querySelector('select.version');
@ -427,8 +467,8 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
$('view').querySelectorAll("tbody").forEach((body) => {
var row = body.childNodes[rowIndex];
if (!row) return;
toggleCssClass(row, 'selected',
row.entry && row.entry.name == firstEntry.name);
toggleCssClass(row, 'selected', row.entry && row.entry.name ==
firstEntry.name);
});
if (updateSelectedPage) {
entry = selectedEntry.page.version.getEntry(entry);
@ -442,8 +482,8 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
table = $('detailView').querySelector('.versionDetailTable');
tbody = document.createElement('tbody');
if (entry !== undefined) {
$('detailView').querySelector('.versionDetail h3 span').innerHTML
= entry.name;
$('detailView').querySelector('.versionDetail h3 span').innerHTML =
entry.name;
entries = versions.pageVersions(entry.page.name).map(
(page) => {
return page.get(entry.name)
@ -470,14 +510,16 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
tbody = document.createElement('tbody');
if (entry !== undefined) {
var version = entry.page.version;
$('detailView').querySelector('.pageDetail h3 span').innerHTML
= version.name;
$('detailView').querySelector('.pageDetail h3 span').innerHTML =
version.name;
entries = version.pages.map(
(page) => {
return page.get(entry.name)
});
entries.sort((a, b) => {
return b.timePercent - a.timePercent
var cmp = b.timePercent - a.timePercent;
if (cmp.toFixed(1) == 0) return b.time - a.time;
return cmp
});
entries.forEach((pageEntry) => {
if (pageEntry === undefined) return;
@ -495,15 +537,12 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
var tds = table.querySelectorAll('tfoot td');
tds[2].innerHTML = ms(entry.getTimeImpact());
// Only show the percentage total if we are in diff mode:
if (baselineVersion !== undefined) {
tds[3].innerHTML = percent(entry.getTimePercentImpact());
} else {
tds[3].innerHTML = ''
}
tds[4].innerHTML = count(entry.getCountImpact());
}
table.replaceChild(tbody, table.querySelector('tbody'));
showImpactList(entry.page);
showPageGraphs(entry.page);
}
function showImpactList(page) {
@ -515,26 +554,38 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
var version = page.version;
var entries = version.allEntries();
if (selectedEntry !== undefined && selectedEntry.isGroup) {
impactView.querySelector('h3 span').innerHTML
+= " " + selectedEntry.name;
impactView.querySelector('h3 span').innerHTML += " " + selectedEntry.name;
entries = entries.filter((entry) => {
return entry.name == selectedEntry.name ||
(entry.parent && entry.parent.name == selectedEntry.name)
});
}
var isCompareView = baselineVersion !== undefined;
entries = entries.filter((entry) => {
if (isCompareView) {
var impact = entry.getTimeImpact();
return impact < -1 || 1 < impact
}
return entry.getTimePercentImpact() > 0.1;
});
entries.sort((a, b) => {
return b.getTimePercentImpact() - a.getTimePercentImpact();
var cmp = b.getTimePercentImpact() - a.getTimePercentImpact();
if (isCompareView || cmp.toFixed(1) == 0) {
return b.getTimeImpact() - a.getTimeImpact();
}
return cmp
});
entries.forEach((entry) => {
var tr = document.createElement('tr');
tr.entry = entry;
td(tr, entry.name, 'name');
td(tr, ms(entry.getTimeImpact()), 'value time');
td(tr, percent(entry.getTimePercentImpact()), 'value time');
var topPages = entry.getPagesByPercentImpact().slice(0, 2)
var percentImpact = entry.getTimePercentImpact();
td(tr, percentImpact > 1000 ? '-' : percent(percentImpact), 'value time');
var topPages = entry.getPagesByPercentImpact().slice(0, 3)
.map((each) => {
return each.name + ' ('
+ percent(each.getEntry(entry).timePercent) + ')'
return each.name + ' (' + percent(each.getEntry(entry).timePercent) +
')'
});
td(tr, topPages.join(', '), 'name');
tbody.appendChild(tr);
@ -542,6 +593,64 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
table.replaceChild(tbody, table.querySelector('tbody'));
}
var selectedGroup;
function showPageGraphs(page) {
var groups = page.groups.filter(each => each.name != page.total.name);
if (selectedGroup == undefined) {
selectedGroup = groups[0];
} else {
groups = groups.filter(each => each.name != selectedGroup.name);
groups.unshift(selectedGroup);
}
var dataTable = new google.visualization.DataTable();
dataTable.addColumn('string', 'Name');
groups.forEach(group => {
var column = dataTable.addColumn('number', group.name);
dataTable.setColumnProperty(column, 'group', group);
});
// Calculate the average row
var row = ['Average'];
groups.forEach((group) => {
row.push(group.getTimeImpact());
});
dataTable.addRow(row);
// Sort the pages by the selected group.
var pages = page.version.pages.slice();
pages.sort((a, b) => {
return b.getEntry(selectedGroup).timePercent - a.getEntry(selectedGroup).timePercent;
});
// Calculate the entries for the pages
pages.forEach((page) => {
row = [page.name];
groups.forEach((group) => {
row.push(page.getEntry(group).time);
});
dataTable.addRow(row);
});
var height = 1000/27*page.version.pages.length;
var options = {
title: 'Page Comparison for Version ' + page.version.name,
isStacked: 'percent',
height: height ,
hAxis: {
title: '% Time',
minValue: 0,
},
vAxis: {
}
};
var chart = new google.visualization.BarChart($('pageGraphs'));
chart.draw(dataTable, options);
google.visualization.events.addListener(chart, 'select', selectHandler);
function selectHandler() {
var column = chart.getSelection()[0].column;
if (column === undefined) return;
selectedGroup = dataTable.getColumnProperty(column, 'group');
showPageGraphs(selectedEntry.page);
}
}
function showGroup(entry) {
toggleGroup(entry, true);
}
@ -563,34 +672,42 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
popover.querySelector('table').className = "";
if (baselineVersion !== undefined) {
entry = baselineVersion.getEntry(entry);
if (entry === undefined) return;
setPopoverDetail(popover, entry, '.compare');
popover.querySelector('table').className = "compare";
}
}
function setPopoverDetail(popover, entry, prefix) {
popover.querySelector(prefix + '.version').innerHTML
= entry.page.version.name;
popover.querySelector(prefix + '.time').innerHTML
= ms(entry._time, false);
popover.querySelector(prefix + '.timeVariance').innerHTML
var node = (name) => popover.querySelector(prefix + name);
if (entry == undefined) {
node('.version').innerHTML = baselineVersion.name;
node('.time').innerHTML = '-';
node('.timeVariance').innerHTML = '-';
node('.percent').innerHTML = '-';
node('.percentVariance').innerHTML = '-';
node('.count').innerHTML = '-';
node('.countVariance').innerHTML = '-';
node('.timeImpact').innerHTML = '-';
node('.timePercentImpact').innerHTML = '-';
} else {
node('.version').innerHTML = entry.page.version.name;
node('.time').innerHTML = ms(entry._time, false);
node('.timeVariance').innerHTML
= percent(entry.timeVariancePercent, false);
popover.querySelector(prefix + '.percent').innerHTML
= percent(entry.timePercent, false);
popover.querySelector(prefix + '.percentVariance').innerHTML
node('.percent').innerHTML = percent(entry.timePercent, false);
node('.percentVariance').innerHTML
= percent(entry.timePercentVariancePercent, false);
popover.querySelector(prefix + '.count').innerHTML
= count(entry._count, false);
popover.querySelector(prefix + '.countVariance').innerHTML
node('.count').innerHTML = count(entry._count, false);
node('.countVariance').innerHTML
= percent(entry.timeVariancePercent, false);
popover.querySelector(prefix + '.timeImpact').innerHTML
node('.timeImpact').innerHTML
= ms(entry.getTimeImpact(false), false);
popover.querySelector(prefix + '.timePercentImpact').innerHTML
node('.timePercentImpact').innerHTML
= percent(entry.getTimeImpactVariancePercent(false), false);
}
}
// ========================================================================
// ===========================================================================
// Helpers
function $(id) {
return document.getElementById(id)
@ -648,25 +765,31 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
node.className = classes.join(' ');
}
function diffSign(value, showDiff) {
if (value <= 0 || showDiff === false) return '';
if (baselineVersion == undefined) return '';
return '+';
function diffSign(value, digits, unit, showDiff) {
if (showDiff === false || baselineVersion == undefined) {
return value.toFixed(digits) + unit;
}
return (value >= 0 ? '+' : '') + value.toFixed(digits) + unit + 'Δ';
}
function ms(time, showDiff) {
return diffSign(time, showDiff) + time.toFixed(1) + 'ms';
function ms(value, showDiff) {
return diffSign(value, 1, 'ms', showDiff);
}
function count(time, showDiff) {
return diffSign(time, showDiff) + time.toFixed(0) + '#';
function count(value, showDiff) {
return diffSign(value, 0, '#', showDiff);
}
function percent(time, showDiff) {
return diffSign(time, showDiff) + time.toFixed(1) + '%';
function percent(value, showDiff) {
return diffSign(value, 1, '%', showDiff);
}
// ========================================================================
// =========================================================================
// EventHandlers
function handleBodyLoad() {
$('uploadInput').focus();
}
function handleLoadFile() {
var files = document.getElementById("uploadInput").files;
var file = files[0];
@ -747,7 +870,19 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
showPopover(target.entry);
}
// ========================================================================
function handleToggleVersionEnable(event) {
var version = this.version;
if (version === undefined) return;
version.enabled = this.checked;
initialize();
var page = selectedPage;
if (page === undefined || !page.version.enabled) {
page = versions.getEnabledPage(page.name);
}
showPage(page);
}
// ===========================================================================
class Versions {
constructor() {
@ -759,6 +894,7 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
pageVersions(name) {
var result = [];
this.versions.forEach((version) => {
if (!version.enabled) return;
var page = version.get(name);
if (page !== undefined) result.push(page);
});
@ -780,6 +916,14 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
return 0
})
}
getEnabledPage(name) {
for (var i = 0; i < this.versions.length; i++) {
var version = this.versions[i];
if (!version.enabled) continue;
var page = version.get(name);
if (page !== undefined) return page;
}
}
}
Versions.fromJSON = function(json) {
var versions = new Versions();
@ -793,7 +937,8 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
class Version {
constructor(name) {
this.name = name;
this.pages = []
this.enabled = true;
this.pages = [];
}
add(page) {
this.pages.push(page);
@ -844,10 +989,13 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
}
getTotalTimePercent(name, showDiff) {
if (baselineVersion === undefined) {
return this.getTotalValue(name, 'timePercent');
// Return the overall average percent of the given entry name.
return this.getTotalValue(name, 'time') /
this.getTotalTime('Group-Total') * 100;
}
var baselineValue = baselineVersion.getTotalTime(name);
return this.getTotalValue(name, 'time') / baselineValue * 100;
// Otherwise return the difference to the sum of the baseline version.
var baselineValue = baselineVersion.getTotalTime(name, false);
return this.getTotalValue(name, '_time') / baselineValue * 100;
}
getTotalTimeVariance(name, showDiff) {
// Calculate the overall error for a given entry name
@ -864,8 +1012,7 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
this.getTotalTime(name, showDiff) * 100;
}
getTotalCount(name, showDiff) {
var property = showDiff === false ? '_count' : 'count';
return this.getTotalValue(name, property);
return this.getTotalValue(name, showDiff === false ? '_count' : 'count');
}
getPagesByPercentImpact(name) {
var sortedPages =
@ -877,12 +1024,20 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
});
return sortedPages;
}
sort() {
this.pages.sort((a, b) => {
if (a.name > b.name) return 1;
if (a.name < b.name) return -1;
return 0
})
}
}
Version.fromJSON = function(name, data) {
var version = new Version(name);
for (var page in data) {
version.add(Page.fromJSON(version, page, data[page]));
}
version.sort();
return version;
}
@ -932,8 +1087,7 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
return this.versions.length
}
forEachSorted(referencePage, func) {
// Iterate over all the entries in the order they appear on the
// reference page.
// Iterate over all the entries in the order they appear on the reference page.
referencePage.forEach((parent, referenceEntry) => {
var entry;
if (parent) parent = this.entryDict.get(parent.name);
@ -962,6 +1116,9 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
}
}
Page.fromJSON = function(version, name, data) {
if (name.indexOf('www.') == 0) {
name = name.substring(4);
}
var page = new Page(version, name);
for (var i = 0; i < data.length; i++) {
page.add(Entry.fromJSON(i, data[data.length - i - 1]));
@ -1007,8 +1164,9 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
if (baselineVersion == undefined) return value;
var baselineEntry = baselineVersion.getEntry(this);
if (!baselineEntry) return value;
return (this._time - baselineEntry._time) /
this.page.total._time * 100;
if (baselineVersion === this.page.version) return value;
return (this._time - baselineEntry._time) / this.page.total._time *
100;
}
get timePercentVariancePercent() {
// Get the absolute values for the percentages
@ -1018,8 +1176,7 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
return this.page.version.getTotalTime(this.name, showDiff);
}
getTimeImpactVariancePercent(showDiff) {
return this.page.version
.getTotalTimeVariancePercent(this.name, showDiff);
return this.page.version.getTotalTimeVariancePercent(this.name, showDiff);
}
getTimePercentImpact(showDiff) {
return this.page.version.getTotalTimePercent(this.name, showDiff);
@ -1065,8 +1222,8 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
this.entries.forEach(fun);
return;
}
// If we have a baslineVersion to compare against show also all entries
// from the other group.
// If we have a baslineVersion to compare against show also all entries from the
// other group.
var tmpEntries = baselineVersion.getEntry(this)
.entries.filter((entry) => {
return this.page.get(entry.name) == undefined
@ -1115,7 +1272,7 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
class UnclassifiedEntry extends GroupedEntry {
constructor(page) {
super('Unclassified');
super('Runtime');
this.page = page;
this._time = undefined;
this._count = undefined;
@ -1154,7 +1311,7 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
</script>
</head>
<body onmousemove="handleUpdatePopover(event)">
<body onmousemove="handleUpdatePopover(event)" onload="handleBodyLoad()">
<h1>Runtime Stats Komparator</h1>
<div id="results">
@ -1162,17 +1319,22 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
<h2>Data</h2>
<form name="fileForm">
<p>
<input id="uploadInput" type="file" name="files" onchange="handleLoadFile();">
<input id="uploadInput" type="file" name="files" onchange="handleLoadFile();" accept=".json">
</p>
</form>
</div>
<div class="inline hidden">
<h2>Result</h2>
<div class="compareSelector">
<div class="compareSelector inline">
Compare against:&nbsp;<select id="baseline" onchange="handleSelectBaseline(this, event)"></select><br/>
<span style="color: #060">Green</span> the selected version above performs
better on this measurement.
</div>
<div class="versionSelector inline">
Select Versions:
<ul></ul>
</div>
</div>
<div id="view">
</div>
@ -1180,7 +1342,7 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
<div id="detailView" class="hidden">
<h2></h2>
<div class="versionDetail inline">
<h3><span></span></h3>
<h3>Version Comparison for <span></span></h3>
<table class="versionDetailTable" onclick="handleSelectDetailRow(this, event);">
<thead>
<tr>
@ -1195,7 +1357,7 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
</table>
</div>
<div class="pageDetail inline">
<h3><span></span></h3>
<h3>Page Comparison for <span></span></h3>
<table class="pageDetailTable" onclick="handleSelectDetailRow(this, event);">
<thead>
<tr>
@ -1233,6 +1395,8 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
</table>
</div>
</div>
<div id="pageGraphs" class="hidden">
</div>
<div id="column" class="column">
<div class="header">
@ -1257,18 +1421,19 @@ code is governed by a BSD-style license that can be found in the LICENSE file.
<div class="inline">
<h2>Usage</h2>
<ol>
<li>Install scipy, e.g. <code>sudo aptitude install python-scipy</code>
<li>Build chrome with the <a href="https://codereview.chromium.org/1923893002">extended runtime callstats</a>.</li>
<li>Run callstats.py with a web-page-replay archive:
<pre>./callstats.py run \
<li>Run <code>callstats.py</code> with a web-page-replay archive:
<pre>$V8_DIR/tools/callstats.py run \
--replay-bin=$CHROME_SRC/third_party/webpagereplay/replay.py \
--replay-wpr=top25.wpr \
--replay-wpr=$INPUT_DIR/top25.wpr \
--js-flags="" \
--with-chrome=$CHROME_SRC/out/Release/chrome \
--sites-file=top25.json</pre>
--sites-file=$INPUT_DIR/top25.json</pre>
</li>
<li>Move results file to a subdirectory: <code>mkdir $VERSION; mv *.txt $VERSION</code></li>
<li>Move results file to a subdirectory: <code>mkdir $VERSION_DIR; mv *.txt $VERSION_DIR</code></li>
<li>Repeat from step 1 with a different configuration (e.g. <code>--js-flags="--nolazy"</code>).</li>
<li>Create the final results file: <code>./callstats.py json $VERSION1 $VERSION2 > result.json</code></li>
<li>Create the final results file: <code>./callstats.py json $VERSION_DIR1 $VERSION_DIR2 > result.json</code></li>
<li>Use <code>results.json</code> on this site.</code>
</ol>
</div>