[mythtv-users] Can't get glx to load

[James C. Dastrup]

> >>> 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).
>


Overclocking is a good way to lower the CPU by a few %'s.  Most modern
mobos and CPU's can handle overclocking a little bit.