Re: [chromium-dev] Interesting performance characteristics of http://a.qoid.us/google.html

2010-01-12 Thread Brett Wilson
On Mon, Jan 11, 2010 at 9:04 PM, Chris Evans cev...@chromium.org wrote: Hi, I found this interesting: http://a.qoid.us/google.html Because it's clearly very non-JavaScript focused (just a CSS rotation) and yet the browsers exhibit very different performance characteristics. All on my

Re: [chromium-dev] Interesting performance characteristics of http://a.qoid.us/google.html

2010-01-12 Thread Evan Martin
On Tue, Jan 12, 2010 at 10:17 AM, Brett Wilson bre...@chromium.org wrote: I imagine the problems on Linux are the same as they were on Windows, where the underlying graphics layer wants to place glyphs aligned on pixel boundaries. This gives rounding problems and the letters jump around. I

Re: [chromium-dev] Interesting performance characteristics of http://a.qoid.us/google.html

2010-01-12 Thread Brett Wilson
On Tue, Jan 12, 2010 at 11:33 AM, Evan Martin e...@chromium.org wrote: On Tue, Jan 12, 2010 at 10:17 AM, Brett Wilson bre...@chromium.org wrote: I imagine the problems on Linux are the same as they were on Windows, where the underlying graphics layer wants to place glyphs aligned on pixel

[chromium-dev] Interesting performance characteristics of http://a.qoid.us/google.html

2010-01-11 Thread Chris Evans
Hi, I found this interesting: http://a.qoid.us/google.html Because it's clearly very non-JavaScript focused (just a CSS rotation) and yet the browsers exhibit very different performance characteristics. All on my underpowered Windows laptop, Chrome 3 4: smooth. Very nice anti-aliased accurate

Re: [chromium-dev] Interesting performance characteristics of http://a.qoid.us/google.html

2010-01-11 Thread James Robinson
Chromium is spending nearly all of its time inside Skia, so it's likely Skia vs CG differences: Welcome to pprof! For help, type 'help'. (pprof) top Total: 1590 samples 592 37.2% 37.2% 592 37.2% SkRegion::Spanerator::Spanerator 89 5.6% 42.8% 89 5.6% sk_memset32_SSE2

Re: [chromium-dev] Interesting performance characteristics of http://a.qoid.us/google.html

2010-01-11 Thread Chris Evans
On Mon, Jan 11, 2010 at 11:01 PM, Evan Martin e...@chromium.org wrote: On Mon, Jan 11, 2010 at 9:04 PM, Chris Evans cev...@chromium.org wrote: The other browsers do not support the CSS used / required for this demo. There was a similar version, but using SVG animation to do something very