On 01/27/2006 03:16 PM, Jerry Rubinow wrote: > On 1/27/06, Michael T. Dean <[EMAIL PROTECTED]> wrote: > >> On 01/27/2006 02:57 PM, Jerry Rubinow wrote: >> >>> On 1/27/06, Michael T. Dean <[EMAIL PROTECTED]> wrote: >>>> On 01/27/2006 01:25 AM, Jerry Rubinow wrote: >>>>> Today I switched from an nvidia card to onboard sis, and in the >>>>> Xorg.0.log it's still trying to load nvidia's glx extension and >>>>> failing to initialize because I'm now loading the sis driver. >>> The main reason I want to reduce CPU usage at this point is that I'm >>> playing back 720p HD using libmpeg2 and the CPU is bouncing between >>> around 80% and 93%+, with the result that I'm getting stutter. I'm >>> looking for anything that I can do to reduce the CPU load. I'm >>> running a 2.8GHz P4, and I know people have talked about doing HD on >>> 2.4 GHz machines, so I'm not sure why it's so high. I'm not running >>> any deinterlace. Can't do XvMC on Sis. >> So, why are you getting rid of the NVIDIA card (which can do XvMC)? I'd >> say the XvMC is your best bet. Any other method of reducing CPU usage >> is likely to provide negligible gains during playback--that is any >> method short of transcoding HDTV to a lower resolution. >> > Because a Pundit motherboard only has PCI slots, and PCI doesn't seem > to have the bandwidth for HD. I'm not sure how much lower XvMC's > bandwidth requirements are (if at all) than non-XvMC video, but I was > never able to get XvMC to play acceptably over the PCI. > > The on-board Sis, on the other hand, seems to have the bandwidth, and > I _should_ have the CPU, but I'm not sure why it's getting maxed out. > I compiled Myth with O3 and the processor-specific option. >
Ahh. So, at this point I have to punt and say my only suggestion is a different frontend :( or transcoding to a lower resolution. Perhaps someone smarter has better suggestions. Mike _______________________________________________ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
