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Newsgroups: mozilla.dev.performance
From: Will Daniels <daniels.w...@googlemail.com>
Date: Thu, 8 Oct 2009 12:40:28 -0700 (PDT)
Local: Thurs, Oct 8 2009 3:40 pm
Subject: Re: HTML 5 Canvas: Linux Performance Issues
Hi Boris, thanks for your reply!
On Oct 8, 3:17 am, Boris Zbarsky <bzbar...@mit.edu> wrote: > Just as a note: none of the Mozilla.org builds are done with icc. The LOL, OK, not sure where I gathered that misconception from then, > Windows builds (which use PGO) are done with MSVC. though I guess it's not substantively important anyway, especially in view of: > Just to check... were the Ubuntu builds 64-bit, by any chance? If so Aha, yes that makes a _lot_ more sense than putting it down to PGO! I > (and this is my most likely hypothesis at the moment), you're probably > seeing the lack of a 64-bit jit in Firefox 3.5.3's JS engine. The > mozilla.org builds are 32-bit. am indeed using the 64-bit Ubuntu binaries (though it came as some surprise when I checked - obviously I'm not booting from the root partition that I thought I was :D). In any case, I was not aware that there's no/limited JS JIT on 64-bit, so I guess that explains it well enough, given the degree of floating-point arithmetic involved. > > PS: If anybody can suggest also why the rendering of my fractal "zoom That would be cool, though to be honest I haven't really looked at it > > box" (on the mousemove event) is noticeably lagged using the Mozilla > > Linux build, but not the Ubuntu build (or any other build of any other > > browser on any other platform that I tried) > _That_ is really odd. I'll look into that. > -Boris properly myself yet, and no doubt you have bigger fish to fry ;) I would be embarrassed if it turned out to be just my lousy javascript knowledge. Though on second thoughts, it does work fine in all other cases...so I don't know...maybe if someone could just confirm for me that it *is* lagged with the standard Mozilla builds for Linux, in case I did something wacky with the install? Cheers! You must Sign in before you can post messages.
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