Re: Question about pixman,x11perf and xserver
On 12/5/11 6:39 AM, 杨帅 wrote: 1.I recompile the pixman with enable-neon,but when I use the x11perf for testing ,I can‘t see the significant difference between the pixman with neon and pixman without neon.That's why? Presumably because you're not hitting a neon-accelerated path. You've not said which x11perf tests you are measuring with. Be aware that many of them are not at all relevant for real world performance. 2.xserver use which drawing library to resizing the window,scroll the text window ,and so on? 3.which library excepts pixman could I optimize using neon to improve the performance of xserver? The X server has an internal library called 'fb' for this. fb is a layer around pixman that implements X core rendering, either by calling down to pixman or directly. - ajax ___ xorg@lists.freedesktop.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.freedesktop.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
Question about pixman,x11perf and xserver
hi,all I'am using ubuntu running on our chip of cortex-a9 with neon.And there is no 2D/3D hardware in our chip.There are several questions during my trying to improve the user experience. 1.I recompile the pixman with enable-neon,but when I use the x11perf for testing ,I can‘t see the significant difference between the pixman with neon and pixman without neon.That's why? 2.xserver use which drawing library to resizing the window,scroll the text window ,and so on? 3.which library excepts pixman could I optimize using neon to improve the performance of xserver? Best Regards, David ___ xorg@lists.freedesktop.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.freedesktop.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
Re: Question about pixman,x11perf and xserver
On 2011-12-05 06:39, 杨帅 wrote: 1.I recompile the pixman with enable-neon,but when I use the x11perf for testing ,I can‘t see the significant difference between the pixman with neon and pixman without neon.That's why? x11perf is an older test suite, and mostly only tests core graphics. Only x11perf -compwinwin and -comppixwin will make heavy use of pixman (along with the new-style text tests, a*text, aa*text and rgb*text to some extent). The good news is, most modern applications draw using those requests. 2.xserver use which drawing library to resizing the window,scroll the text window ,and so on? Depends on the application. Either pixman, or the fb directory of the server. 3.which library excepts pixman could I optimize using neon to improve the performance of xserver? xserver/fb But first, make sure you're working on something that matters to your application. In particular, cairo-perf-trace is probably more relevant these days than x11perf. See http://cgit.freedesktop.org/cairo-traces/tree/README Peter Harris -- Open Text Connectivity Solutions Group Peter Harrishttp://connectivity.opentext.com/ Research and DevelopmentPhone: +1 905 762 6001 phar...@opentext.comToll Free: 1 877 359 4866 ___ xorg@lists.freedesktop.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.freedesktop.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
Re:Re: Question about pixman,x11perf and xserver
hi,Peter Thanks for your reply~ Now I got the direction! I will try to optimize the xserver/fb and use the cairo-perf-trace for testing Best Regards, David 在 2011-12-05 23:47:57，Peter Harris phar...@opentext.com 写道： On 2011-12-05 06:39, 杨帅 wrote: 1.I recompile the pixman with enable-neon,but when I use the x11perf for testing ,I can‘t see the significant difference between the pixman with neon and pixman without neon.That's why? x11perf is an older test suite, and mostly only tests core graphics. Only x11perf -compwinwin and -comppixwin will make heavy use of pixman (along with the new-style text tests, a*text, aa*text and rgb*text to some extent). The good news is, most modern applications draw using those requests. 2.xserver use which drawing library to resizing the window,scroll the text window ,and so on? Depends on the application. Either pixman, or the fb directory of the server. 3.which library excepts pixman could I optimize using neon to improve the performance of xserver? xserver/fb But first, make sure you're working on something that matters to your application. In particular, cairo-perf-trace is probably more relevant these days than x11perf. See http://cgit.freedesktop.org/cairo-traces/tree/README Peter Harris -- Open Text Connectivity Solutions Group Peter Harrishttp://connectivity.opentext.com/ Research and DevelopmentPhone: +1 905 762 6001 phar...@opentext.comToll Free: 1 877 359 4866 ___ xorg@lists.freedesktop.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.freedesktop.org/mailman/listinfo/xorg Your subscription address: yangshuai...@126.com ___ xorg@lists.freedesktop.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.freedesktop.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
