Dear Ian, > A follow up I see you are running 800x454 @ 24 bit. Should be 800x480 ... > I'm assuming 30 fps and 32bit bus without pixel bit packing, that > means your sending roughly 332.52 MB/s on the bus which on my CPU is > about 42%. So you sa that there is always a full doubleword transfered per pixel? That would be 800x480x4x60Hz= 92 MByte/s ... Or did I miss something?
The bus AFAIK runs at 70MHz/32Bit and therefore has a max. throughput of 280 MByte/s. That means we are using about 33%. (Atmel told us the device will run stable up to a bus load of 50%) > If you reduce the frame rate to 20fps What exactly do you mean? The refresh rate? It's a bit difficult to reduce that as the toolkit (FLTK) we use controls a lot of the refresh logic... > and color depth to 16 bit, then your output rate would drop to 110.83 > MB/s or 14% of the bus a significant savings. Or 800 x 480 x 2 Byte x 60 Hz = 46 MByte/s in my calculation... Which is 16% of the bus capacity and therefore indeed a big saving... Kind regards, Robert > Something to consider if your requirements don't demand 30 fps or 24 > bit color. > > On Thu, Sep 3, 2009 at 9:10 AM, Robert Feld <[email protected] > <mailto:[email protected]>> wrote: > > Hello, > > we are currently developing a handheld device that will display > several curve plotters with realtime data. > We chose FLTK on top of DirectFB as software plattform and an > AVR32 (AP7000) with an 800x480 (WVGA) Display. > > Unfortunately the drawing performance on this platform is not > fully satisfying. > (see for Benchmarks with df_dok below) > > Therefore we consider to change the Processor to a AT91SAM9263. > > My questions therefore: > 1) Is there a graphic driver for the accelerator unit of the > AT91SAM9263? > 2) Has anybody made benchmarks (df_dok) on this Processor > (with/without Acceleration) ? > 3) Do you have benchmark results for similar processors? Is there > a database? > > Here are my benchmark results (AVR32): > > > =======================| DirectFB 1.0.1 > |======================= > (c) 2001-2007 The DirectFB Organization (directfb.org > <http://directfb.org>) > (c) 2000-2004 Convergence (integrated media) GmbH > ------------------------------------------------------------ > > (*) DirectFB/Core: Single Application Core. (2009-08-12 09:56) [ > DEBUG ][ TRACE ] > (*) DirectFB/Core: doing sync()... > (!) Direct/Modules: Could not open module directory > `/usr/lib/directfb-1.0-0/gfxdrivers'! > --> No such file or directory > (*) DirectFB/Graphics: Generic Software Rasterizer 0.6 > (directfb.org <http://directfb.org>) > (*) DirectFB/Core/WM: Default 0.3 (directfb.org <http://directfb.org>) > (*) Direct/Interface: Loaded 'PNG' implementation of > 'IDirectFBImageProvider'. > (*) Direct/Interface: Loaded 'FT2' implementation of 'IDirectFBFont'. > (*) Direct/Interface: Using 'GIF' implementation of > 'IDirectFBImageProvider'. > > Benchmarking 256x256 on 800x464 RGB24 (24bit)... > > Anti-aliased Text 3.363 secs ( > 9.634 KChars/sec) [100.0%] > Anti-aliased Text (blend) 3.967 secs ( > 2.722 KChars/sec) [100.2%] > Fill Rectangle 3.411 secs ( > 9.606 MPixel/sec) [100.0%] > Fill Rectangle (blend) 8.785 secs ( > 0.745 MPixel/sec) [100.0%] > Fill Rectangles [10] 6.683 secs ( > 9.806 MPixel/sec) [100.1%] > Fill Rectangles [10] (blend) 87.664 secs ( > 0.747 MPixel/sec) [100.0%] > Fill Triangles 3.193 secs ( > 7.183 MPixel/sec) [100.0%] > Fill Triangles (blend) 4.591 secs ( > 0.713 MPixel/sec) [100.0%] > Draw Rectangle 3.098 secs ( > 0.903 KRects/sec) [100.6%] > Draw Rectangle (blend) 3.524 secs ( > 0.170 KRects/sec) [100.0%] > Draw Lines [10] 3.026 secs ( > 3.304 KLines/sec) [100.0%] > Draw Lines [10] (blend) 3.863 secs ( > 0.776 KLines/sec) [100.0%] > Fill Spans 3.151 secs ( > 8.319 MPixel/sec) [100.0%] > Fill Spans (blend) 8.927 secs ( > 0.734 MPixel/sec) [100.0%] > Blit 3.118 secs ( > 10.509 MPixel/sec) [100.3%] > Blit 180 3.108 secs ( > 10.543 MPixel/sec) [100.3%] > Blit colorkeyed 3.921 secs ( > 6.685 MPixel/sec) [100.0%] > Blit destination colorkeyed 3.655 secs ( > 3.586 MPixel/sec) [100.2%] > Blit with format conversion 5.728 secs ( > 2.288 MPixel/sec) [100.1%] > Blit with colorizing 3.789 secs ( > 1.729 MPixel/sec) [100.0%] > Blit from 32bit (blend) 11.793 secs ( > 0.555 MPixel/sec) [100.0%] > Blit from 32bit (blend) with colorizing 12.839 secs ( > 0.510 MPixel/sec) [100.0%] > Stretch Blit 4.866 secs ( > 6.821 MPixel/sec) [100.2%] > Stretch Blit colorkeyed 5.071 secs ( > 6.545 MPixel/sec) [100.0%] > > > Kind regards, > Robert > > -- > Robert Feld, Dipl.-Ing. > Research and Development > > Corscience GmbH & Co. KG > Henkestr. 91 > D-91052 Erlangen > Germany > > Tel: +49 9131 977986-511 > Fax: +49 9131 977986-59 > e-mail: [email protected] <mailto:[email protected]> > Internet: www.corscience.de <http://www.corscience.de/> > ---------------------------------------- > Corscience GmbH & Co. KG > Sitz der Gesellschaft/Place of business: Erlangen > Amtsgericht/Local court: Fürth > Handelsregisternummer/Commercial Register No.: HRA 7510 > Geschäftsführer/Managing director: Prof. Dr. Armin Bolz, Dr. > Karl-Andreas Feldhahn, Dipl.-Volksw. Marc Griefahn > > CONFIDENTIALITY: This e-mail and any attachments are confidential > and may also be privileged. If received in error, please do not > disclose the contents to anyone, but notify us immediately by > return e-mail and delete this e-mail and any attachments from your > system. Thank you. > > > > _______________________________________________ > directfb-users mailing list > [email protected] <mailto:[email protected]> > http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-users > > -- Robert Feld, Dipl.-Ing. Research and Development Corscience GmbH & Co. KG Henkestr. 91 D-91052 Erlangen Germany Tel: +49 9131 977986-511 Fax: +49 9131 977986-59 e-mail: [email protected] <mailto:[email protected]> Internet: www.corscience.de <http://www.corscience.de/> ---------------------------------------- Corscience GmbH & Co. KG Sitz der Gesellschaft/Place of business: Erlangen Amtsgericht/Local court: Fürth Handelsregisternummer/Commercial Register No.: HRA 7510 Geschäftsführer/Managing director: Prof. Dr. Armin Bolz, Dr. Karl-Andreas Feldhahn, Dipl.-Volksw. Marc Griefahn CONFIDENTIALITY: This e-mail and any attachments are confidential and may also be privileged. If received in error, please do not disclose the contents to anyone, but notify us immediately by return e-mail and delete this e-mail and any attachments from your system. Thank you.
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