On 1/27/06, Michael T. Dean <[EMAIL PROTECTED]> wrote: > 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.
I'm very close - maybe a 5% or 10% reductionin CPU might do it. Thanks for trying (and for the glx suggestions). -Jerry _______________________________________________ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
