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Newsgroups: mozilla.dev.performance
From: Boris Zbarsky <bzbar...@mit.edu>
Date: Wed, 07 Oct 2009 20:17:58 -0400
Local: Wed, Oct 7 2009 8:17 pm
Subject: Re: HTML 5 Canvas: Linux Performance Issues
On 10/7/09 6:54 PM, Will Daniels wrote:
> After testing a number of different browsers on different platforms, I Just as a note: none of the Mozilla.org builds are done with icc. The > concluded that: Opera is consistently slow, Chromium is consistently > "swift", and Intel/PGO builds of Firefox are consistently fastest. Windows builds (which use PGO) are done with MSVC. Last I checked, icc porting work was sporadically happening, but not done. > I'd really like to help improve performance of GCC builds of Firefox, Almost certainly not; GCC with PGO enabled ends up with internal errors > but I don't (yet) know anything about whether the PGO capabilities of > GCC are used in building the Ubuntu Firefox package in its profiling information bookkeeping if you try to use it on Firefox. As in, the PGO is just too buggy to use so far. The Linux builds mozilla.org ships are not using GCC's PGO either. > or indeed whether it is PGO primarily that is making the difference here (i.e. perhaps Just to check... were the Ubuntu builds 64-bit, by any chance? If so > the Intel compiler is just that much better at optimising this > particular arithmetic case). (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. > One thing in particular I'd like to ask here, is whether you keep any As I said above, I don't think it's even possible to build Firefox with > 3.5.3 Linux binaries that are compiled with the Intel compiler without > the PGO phase, for comparison? icc at the moment. I could be wrong about that, though! > PS: If anybody can suggest also why the rendering of my fractal "zoom _That_ is really odd. I'll look into that. > 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) -Boris You must Sign in before you can post messages.
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