mirror of
https://github.com/servo/servo
synced 2026-05-12 18:06:32 +02:00
135 lines
3.9 KiB
HTML
135 lines
3.9 KiB
HTML
<!--
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Copyright 2013, Google Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the
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distribution.
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* Neither the name of Google Inc. nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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-->
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<html>
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<head>
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<title>ArrayBuffer benchmark</title>
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<script src="util.js"></script>
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<script>
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var PRINT_SIZE = true;
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// Initial size of arrays.
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var START_SIZE = 10 * 1024;
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// Stops benchmark when the size of an array exceeds this threshold.
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var STOP_THRESHOLD = 100000 * 1024;
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// If the size of each array is small, write/read the array multiple times
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// until the sum of sizes reaches this threshold.
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var MIN_TOTAL = 100000 * 1024;
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var MULTIPLIERS = [5, 2];
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// Repeat benchmark for several times to measure performance of optimized
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// (such as JIT) run.
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var REPEAT_FOR_WARMUP = 3;
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function writeBenchmark(size, minTotal) {
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var totalSize = 0;
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while (totalSize < minTotal) {
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var arrayBuffer = new ArrayBuffer(size);
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// Write 'a's.
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fillArrayBuffer(arrayBuffer, 0x61);
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totalSize += size;
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}
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return totalSize;
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}
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function readBenchmark(size, minTotal) {
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var totalSize = 0;
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while (totalSize < minTotal) {
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var arrayBuffer = new ArrayBuffer(size);
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if (!verifyArrayBuffer(arrayBuffer, 0x00)) {
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queueLog('Verification failed');
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return -1;
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}
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totalSize += size;
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}
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return totalSize;
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}
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function runBenchmark(benchmarkFunction,
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size,
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stopThreshold,
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minTotal,
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multipliers,
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multiplierIndex) {
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while (size <= stopThreshold) {
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var maxSpeed = 0;
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for (var i = 0; i < REPEAT_FOR_WARMUP; ++i) {
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var startTimeInMs = getTimeStamp();
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var totalSize = benchmarkFunction(size, minTotal);
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maxSpeed = Math.max(maxSpeed,
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calculateSpeedInKB(totalSize, startTimeInMs));
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}
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queueLog(formatResultInKiB(size, maxSpeed, PRINT_SIZE));
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size *= multipliers[multiplierIndex];
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multiplierIndex = (multiplierIndex + 1) % multipliers.length;
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}
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}
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function runBenchmarks() {
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queueLog('Message size in KiB, Speed in kB/s');
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queueLog('Write benchmark');
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runBenchmark(
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writeBenchmark, START_SIZE, STOP_THRESHOLD, MIN_TOTAL, MULTIPLIERS, 0);
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queueLog('Finished');
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queueLog('Read benchmark');
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runBenchmark(
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readBenchmark, START_SIZE, STOP_THRESHOLD, MIN_TOTAL, MULTIPLIERS, 0);
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addToLog('Finished');
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}
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function init() {
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logBox = document.getElementById('log');
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queueLog(window.navigator.userAgent.toLowerCase());
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addToLog('Started...');
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setTimeout(runBenchmarks, 0);
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}
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</script>
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</head>
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<body onload="init()">
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<textarea
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id="log" rows="50" style="width: 100%" readonly></textarea>
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</body>
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</html>
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