On Wed, May 13, 2009 at 1:11 AM, Maciej Stachowiak <[email protected]> wrote:
> > On May 13, 2009, at 12:18 AM, Meryl Silverburgh wrote: > > Hi, >> >> Does webkit cache squirrelfish bytecode? For example, multiple can use >> the same javascript file (e.g. common javascript libraries, like >> jquery, or same domain uses some common javascript file across >> different pages for the same domain). >> >> When webkit parses the JS file and builds squirrelfish-bytecode, does >> it cache it ? so that subsequence loading of the same js file will >> skip the js compile process? >> > > 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. What does the < 2% number reflect? The percent of time while running a particular benchmark or something? 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.
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