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52 lines
1.9 KiB
HTML
52 lines
1.9 KiB
HTML
<!doctype html>
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<html lang="en-us">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link rel="shortcut icon" href="data:image/x-icon;," type="image/x-icon">
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<link rel="stylesheet" href="../../../common/testing.css"/>
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<title>sqlite3 OPFS Worker concurrency tester</title>
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<style>
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body { display: revert; }
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body > * {}
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#test-output {
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font-family: monospace;
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}
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</style>
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</head>
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<body>
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<h1></h1>
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<p>
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OPFS concurrency tester using multiple independent Workers.
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Disclaimer: concurrency in OPFS is currently a pain point
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and timing/concurrency mitigation in this environment is
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highly unpredictable!
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</p>
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<p>
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URL flags: pass a number of workers using
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the <code>workers=N</code> URL flag. Set the time between each
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workload with <code>interval=N</code> (milliseconds). Set the
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number of worker iterations with <code>iterations=N</code>.
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Enable OPFS VFS verbosity with <code>verbose=1-3</code> (output
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goes to the dev console). Enable/disable "unlock ASAP" mode
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(higher concurrency, lower speed)
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with <code>unlock-asap=0-1</code>.
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</p>
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<p>Achtung: if it does not start to do anything within a couple of
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seconds, check the dev console: Chrome often fails with "cannot allocate
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WasmMemory" at startup. Closing and re-opening the tab usually resolves
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it.
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</p>
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<div class='input-wrapper'>
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<input type='checkbox' id='cb-log-reverse'>
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<label for='cb-log-reverse'>Reverse log order?</label>
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</div>
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<div id='test-output'></div>
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<script>(function(){
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document.querySelector('h1').innerHTML =
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document.querySelector('title').innerHTML;
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})();</script>
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<script src="test.js?sqlite3.dir=../../../jswasm"></script>
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</body>
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</html>
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