On Mon, 23 Aug 2010, Shouqun Liu wrote: > Hi?Jyri, > I have?applied?the patch, but makes no effort to improve the performance, > the CPU usage is still high :) > Well, I originally created the patch to avoid pulseaudio getting stuck while waiting swapped out memblocks on Nokia N900. After applying the patch I also noticed that it slightly improved the performance in some usecases. I think that was because of better CPU cache hit ratio, but I guess you need to have a lot of concurrent streams or some audio filtering ongoing on a limited memory-bandwidth device like N900 to notice the difference. > I'm still confusing about this issue, there is no such problem in my PC, but > its critical in my netbook. > btw, the PA version on PC and netbook are both latest 0.9.21 release. > Do you have a constant high load on your netbook or do you see it for instance while PA is rewinding streams? You should be able to decrease the load spikes from rewinding by shortening the ALSA DMA buffer. Do your streams have the same sample-rate as your default sink? If no, relaxing your sample-rate-converter settings should help (or configuring your sink to match the samplerate of your stremas). Cheers, Jyri
