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October 22, 2021 08:45
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Finding JS memory usage of a chrome tab
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| var div = document.createElement('div'); | |
| div.style.cssText = 'position:absolute;top:0;right:0;background:rgba(255,255,255,0.7);padding:10px;pointer-events:none;z-index:10000;font-weight:bold;font-size:20px'; | |
| document.body.appendChild(div); | |
| setInterval(function () { | |
| div.innerHTML = (Math.round(console.memory.usedJSHeapSize / 1024 / 1024 * 10) / 10) + ' / ' + (Math.round(console.memory.totalJSHeapSize / 1024 / 1024 * 10) / 10); | |
| gc(); | |
| }, 250); |
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| Add the below flags while running chrome | |
| --enable-precise-memory-info --js-flags="--expose-gc" | |
| Ex: | |
| "C:\Program Files\Google\Chrome Beta\Application\chrome.exe" --user-data-dir="C:/ChromeDevSession" --disable-web-security --ignore-certificate-errors --enable-precise-memory-info --js-flags="--expose-gc" |
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