<div class="gmail_quote"><div class="gmail_quote"><div class="im">On Wed, May 13, 2009 at 1:11 AM, Maciej Stachowiak <span dir="ltr"><<a href="mailto:mjs@apple.com" target="_blank">mjs@apple.com</a>></span> wrote:<br>
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On May 13, 2009, at 12:18 AM, Meryl Silverburgh wrote:<br>
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Hi,<br>
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Does webkit cache squirrelfish bytecode? For example, multiple can use<br>
the same javascript file (e.g. common javascript libraries, like<br>
jquery, or same domain uses some common javascript file across<br>
different pages for the same domain).<br>
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When webkit parses the JS file and builds squirrelfish-bytecode, does<br>
it cache it ? so that subsequence loading of the same js file will<br>
skip the js compile process?<br>
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We don't currently cache the bytecode (or the native code). It is an option we have considered, however, currently, code generation is a trivial portion of JS execution time (< 2%), so we're not pursuing this at the moment.</blockquote>
<div><br></div></div><div>What does the < 2% number reflect? The percent of time while running a particular benchmark or something?</div><div><br></div><div>I totally believe that the speed of runtime is not really affected by it, but what about page load latency? Compile time is a non-trivial component of load time for most JIT compilers I've heard of.</div>
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