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<!-- Copyright (c) 2025 Meta Platforms, Inc. and affiliates. -->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>bpfilter benchmarks</title>
<link rel="icon" type="image/x-icon" href="../../_static/favicon.ico">
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH" crossorigin="anonymous">
<script>
window.addEventListener('load', function () {
render();
})
function formatTimeDuration(value, fixed = 2, unit = null) {
const coeff = {
"ns": 1,
"μs": 1000,
"ms": 1000 * 1000,
"s": 1000 * 1000 * 1000
};
// Specific unit requested, use it
if (unit !== null) {
return {
value: value / coeff[unit],
str: parseFloat(value / coeff[unit]).toFixed(2),
unit: unit,
raw: value
};
}
// No unit requested, find the best one
if (value < 1000) {
return {
value: value,
str: parseFloat(value).toFixed(2),
unit: "ns",
raw: value
};
} else if (value < 1000000) {
return {
value: value / coeff["μs"],
str: parseFloat(value / coeff["μs"]).toFixed(2),
unit: "μs",
raw: value
};
} else if (value < 1000000000) {
return {
value: value / coeff["ms"],
str: parseFloat(value / coeff["ms"]).toFixed(2),
unit: "ms",
raw: value
};
} else {
return {
value: value / coeff["s"],
str: parseFloat(value / coeff["s"]).toFixed(2),
unit: "s",
raw: value
};
}
}
// Determine if a result is statistically significant
function isSignificant(stat) {
return Math.abs(stat.zscore) > 3;
}
function calculateBenchmarkStats(values, windowSize = 10) {
if (!values || values.length <= 2) return null;
const lastResult = values[values.length - 1]
const last10Results = values.slice(-windowSize - 1, -1);
const sum = values.reduce((a, b) => a + b, 0);
const mean = sum / values.length;
const variance = values.reduce((a, b) => a + Math.pow(b - mean, 2), 0) / values.length;
const stdDev = Math.sqrt(variance);
const min = Math.min(...values);
const max = Math.max(...values);
const zscore = (lastResult - mean) / stdDev;
return { min, max, mean, stdDev, zscore };
}
function formatData(data) {
/* Format commits as { sha, date, subject } with subject being only
* the subject of the commit, not the whole body. Store the
* formatted commits information in a map with the commit SHA as key. */
const commitsInfo = data.commits.reduce((acc, { sha, message, ...otherFields }) => {
const parts = message.split('\n\n');
const subject = parts[0].replace(/\n/g, ' ');
acc[sha] = {
sha,
subject,
...otherFields
};
return acc;
}, {});
// Use a map to preserve tests order
const benchmarks = new Map(
data.benchNames.map(name => {
return [name.replace(/\/iterations:[0-9]+$/, ''), {}];
})
);
var benchmarksResults = [];
for (var [benchmarkName, rawResults] of Object.entries(data.results)) {
benchmarkName = benchmarkName.replace(/\/iterations:[0-9]+$/, '');
const lastTime = formatTimeDuration(2);
var processedResults = [];
for (const [commitSha, commitResults] of Object.entries(rawResults)) {
processedResults.push(
{
commit: commitsInfo[commitSha],
time: commitResults.time,
nInsn: commitResults.nInsn ? commitResults.nInsn : null,
}
);
}
processedResults = processedResults.sort((a, b) => a.commit.date - b.commit.date);
benchmarksResults.push({
name: benchmarkName,
results: processedResults,
stats: {
time: calculateBenchmarkStats(processedResults.map(item => item.time)),
nInsn: calculateBenchmarkStats(processedResults.map(item => item.nInsn).filter((item) => item != null)),
},
unit: formatTimeDuration(processedResults.at(-1).time).unit,
});
}
return benchmarksResults;
}
const data = {{ DATA }};
function render() {
const formattedData = formatData(data);
for (const benchmarkResults of formattedData) {
makeTable(benchmarkResults);
makeChart(benchmarkResults);
}
}
function makeTable(benchmarkResults, name, commits, results) {
const nResults = benchmarkResults.results.length;
const lastResult = benchmarkResults.results[nResults - 1];
const lastTime = formatTimeDuration(lastResult.time);
const lastNInsn = lastResult.nInsn;
let newHtml = `<td class="text-end font-monospace">${lastTime.str} ${lastTime.unit}</td>`;
newHtml += `<td class="text-end font-monospace">${lastNInsn ? lastNInsn : "n/a"}</td>`;
let diffTimeHtml = '<td class="text-end font-monospace">n/a</td>';
let baselineTimeHtml = '<td class="text-end font-monospace">n/a</td>';
if (benchmarkResults.stats.time) {
const baselineStats = benchmarkResults.stats.time;
const baseline = formatTimeDuration(baselineStats.mean, 2, lastTime.unit);
const abs = formatTimeDuration(lastTime.raw - baseline.raw, 2, lastTime.unit);
const diff = (lastTime.raw / baseline.raw - 1) * 100;
const significant = Math.abs(baselineStats.zscore) >= 2;
const diffClass = significant ? (baselineStats.zscore > 0 ? "text-danger" : "text-success") : "text-muted";
const symbol = significant ? (baselineStats.zscore > 0 ? "⚠️" : "🥳") : false;
diffTimeHtml = `<td class="text-end font-monospace ${diffClass}">
${(diff < 0 ? "" : "+") + parseFloat(diff).toFixed(2)}%
(${abs.raw < 0 ? "" : "+"}${abs.str} ${abs.unit})
${symbol ? symbol : ""}
</td>`;
baselineTimeHtml = `<td class="text-end font-monospace">
${baseline.str} ${baseline.unit}
<small class="text-muted">(±${(baselineStats.stdDev / baselineStats.mean * 100).toFixed(1)}%)</small>
</td>`;
}
let diffInsnHtml = '<td class="text-end font-monospace">n/a</td>';
let baselineInsnHtml = '<td class="text-end font-monospace">n/a</td>';
if (benchmarkResults.stats.nInsn) {
const baselineStats = benchmarkResults.stats.nInsn;
const baseline = baselineStats.mean;
const abs = lastNInsn - baseline;
const diff = (abs / baseline) * 100;
const significant = Math.abs(baselineStats.zscore) >= 2;
const diffClass = significant ? (baselineStats.zscore > 0 ? "text-danger" : "text-success") : "text-muted";
const symbol = significant ? (baselineStats.zscore > 0 ? "⚠️" : "🥳") : false;
diffInsnHtml = `<td class="text-end font-monospace ${diffClass}">
${(diff < 0 ? "" : "+") + parseFloat(diff).toFixed(2)}%
(${(abs < 0 ? "" : "+") + parseFloat(abs).toFixed(2)})
${symbol ? symbol : ""}
</td>`;
baselineInsnHtml = `<td class="text-end font-monospace">
${baseline ? baseline.toFixed(0) : "n/a"}
${baseline ? `<small class="text-muted">(±${(baselineStats.stdDev / baselineStats.mean * 100).toFixed(1)}%)</small>` : ""}
</td>`;
}
var data = `<td><a href="#${benchmarkResults.name}" class="link-primary link-underline-opacity-0">${benchmarkResults.name}</a></td>`;
data += diffTimeHtml + diffInsnHtml;
data += newHtml;
data += baselineTimeHtml + baselineInsnHtml;
data += '</tr>';
const table = document.getElementById('table-body');
table.insertAdjacentHTML("beforeend", data);
}
function makeChart(benchmarkResults) {
const ctx = document.getElementById('charts');
const name = benchmarkResults.name;
const unit = benchmarkResults.unit;
ctx.insertAdjacentHTML("beforeend",
`<div class="col container-fluid my-3" id="${name}"><h5>${name}</h5></div>`
);
const chartCtx = document.getElementById(name);
chartCtx.insertAdjacentHTML("beforeend",
`<canvas id="${name}Chart"></canvas>`
);
var durations = []
var nInsns = []
var labels = []
for (result of benchmarkResults.results) {
durations.push(result.time);
labels.push(result.commit.sha);
if (result.nInsn)
nInsns.push(result.nInsn);
}
new Chart(document.getElementById(name + "Chart"), {
type: 'line',
data: {
labels: labels,
datasets: [
{
label: 'Duration',
data: durations,
yAxisID: 'duration',
tension: 0.1,
order: 1,
pointRadius: 0,
},
{
label: '# of instructions',
data: nInsns,
yAxisID: 'instructions',
tension: 0.1,
order: 2,
pointRadius: 0,
}
].filter(ds => ds.data.length !== 0)
},
options: {
interaction: {
intersect: false,
mode: 'index',
},
plugins: {
tooltip: {
position: "nearest",
yAlign: "top",
callbacks: {
afterTitle: (tooltipItems) => {
const result = benchmarkResults.results.find((e) => e.commit.sha == tooltipItems[0].label);
return result.commit.subject;
},
label: function (context) {
if (context.dataset.yAxisID == "duration") {
duration = formatTimeDuration(context.parsed.y, 2, unit);
return `${duration.str} ${duration.unit}`;
} else if (context.dataset.yAxisID == "instructions") {
return parseInt(context.parsed.y) + " instructions";
} else {
return context.parsed.y;
}
}
}
}
},
scales: {
duration: {
id: 't (ns)',
type: 'linear',
position: 'left',
suggestedMin: 0,
suggestedMax: Math.max(...durations) * 1.1,
title: {
display: true,
text: "Duration"
},
ticks: {
callback: function (value) {
duration = formatTimeDuration(value, 2, unit);
return `${duration.str} ${duration.unit}`;
}
}
},
instructions: {
id: '# insn',
type: 'linear',
position: 'right',
suggestedMin: 0,
suggestedMax: Math.max(...nInsns) * 1.1,
title: {
display: true,
text: '# insn'
},
// Only display the nInsns axis if we have values
display: nInsns.length != 0,
grid: {
drawOnChartArea: false, // only want the grid lines for one axis to show up
}
},
x: {
title: {
display: true,
text: 'Commit'
},
}
},
onClick: function (e) {
const sha = e.chart.tooltip.dataPoints[0].label
if (sha.endsWith("+"))
return;
window.open("https://github.com/facebook/bpfilter/commit/" + sha, "_blank");
}
}
});
}
</script>
</head>
<body>
<nav class="navbar bg-body-tertiary">
<div class="container-fluid">
<a class="navbar-brand" href="#">
<picture>
<source loading="lazy" srcset="../../_static/logo-dark-mode.png"
media="(prefers-color-scheme: dark)">
<img loading="lazy" src="../../_static/logo-light-mode.png" height="30"
class="d-inline-block align-top" alt="">
</picture>
bpfilter benchmark
</a>
</div>
</nav>
<div class="jumbotron m-5 p-5 bg-light">
<div class="container">
<h2>Summary</h2>
<p class="lead">Latest benchmark results compared to a statistical baseline from the previous 10 commits.
</p>
</div>
<table class="table">
<thead>
<tr>
<th scope="col" rowspan="2">Benchmark</th>
<th scope="col" colspan="2" class="text-end">Diff vs baseline</th>
<th scope="col" colspan="2" class="text-end">Latest result</th>
<th scope="col" colspan="2" class="text-end">10-commits baseline</th>
</tr>
<tr>
<th scope="col" class="text-end">Runtime</th>
<th scope="col" class="text-end">Instructions</th>
<th scope="col" class="text-end">Runtime</th>
<th scope="col" class="text-end">Instructions</th>
<th scope="col" class="text-end">Runtime</th>
<th scope="col" class="text-end">Instructions</th>
</tr>
</thead>
<tbody id="table-body">
</tbody>
</table>
<div class="alert alert-info mt-4">
<h5>Understanding the results:</h5>
<ul>
<li><strong>Baseline:</strong> average of the 10 previous commits (with standard deviation)</li>
<li><strong>Significant changes:</strong> if the last commit's benchmark has a standard score (zscore) above 3, compared
to the 10 previous commit average baseline, it is considered a significant change. Hence, the last commit introduced
a genuine performance shift rather than noise.</li>
<li><strong>Color coding:</strong>
<span class="text-success">Green</span> = significant improvement,
<span class="text-danger">Red</span> = significant regression,
<span class="text-muted">Gray</span> = no significant change
</li>
</ul>
</div>
</div>
<div class="jumbotron m-5 p-5 bg-light">
<div class="container">
<h2>History</h2>
<p class="lead">Benchmark results evolution over time.</p>
</div>
<div class="container-fluid">
<div class="row row-cols-2" id="charts">
</div>
</div>
</div>
</body>
</html>
|
