Mike Conley: Making tab switching faster in Firefox with tab warming

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Making tab operations fast Since working on the Electrolysis team (and having transitioned to working on various performance initiatives), I’ve been working on making tab operations feel faster in Firefox. For example, I wrote a few months back about a technique we used to make tab closing faster. Today, I’m writing to talk about how we’re trying to make tab switching feel faster in some cases. What is “tab warming”? When you switch a tab in multi-process Firefox, traditionally we’d send a message to the content process to tell it to paint its layers, and then we’d wait for the compositor to t...
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