At Thu, 22 Feb 2007 11:42:03 -0500, John Dey wrote: > > Hi List, > > I have taken the program midiFMsynth.c written by Dr. Nagorni and built > it on two machines: a PS3/YDL and another AMD64 (processing speed 2ghz) > host (2.6.18-1.2200.fc5). I calculated the running time (in > microseconds) for the program that performs the pcm calculation and > got some interesting (although discouraging) results. I ran the > program two ways: with and without the call to snd_pcm_writei. The > results were: > > PS3: with sound 11501 us; without sound 1200 us > AMD64: with sound 379 us; without sound 280 us > > Is there anyone that can shed light on the differences. I would have > expected similar results from both systems. Thanks. PS3 driver likely has no proper DMA. That causes often high CPU usage. Takashi ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
