Re: Asf fastforward performance
- From: "Alessandro Angeli [MVP::DigitalMedia]" <nobody@xxxxxxxxxxxxxxxxxx>
- Date: Sun, 29 May 2005 23:32:48 +0200
Wael_Bakr wrote:
> The resolution is 720x576 (PAL) at 25 Samples per second ,
> and yes my single processor is 97% used but the funny
> thing is when i use dual processor the processor usage is
> still 97% and the maximum performance i can get is still
> 2X , how comes?
Let say you need a processing power 5 (arbitrary units) to
achive what you want to. If the single processor gives 1,
the playback will stutter and lag behind and the CPU usage
will be near 100%. The dual processor will give you almost
2, but this is still not enough so the playback won't be
smooth yet and the used CPU time will still be near 100%.
Play 1 stream at 1X and see what fraction of the CPU is used
on the single processor. Then you need at least 9 times
that, which may be more than 2 whole CPUs (also take the CPU
speed into account). This is not an accurate estimate but it
will give you an idea of the processing power you need. As
Peter said, an HT "CPU" is practically of no use, so we are
talking about physical cores, if not whole CPUs.
--
// Alessandro Angeli
// MVP :: Digital Media
// a dot angeli at psynet dot net
.
- References:
- Asf fastforward performance
- From: Wael_Bakr
- Re: Asf fastforward performance
- From: Jeremy Noring
- Re: Asf fastforward performance
- From: Wael_Bakr
- Asf fastforward performance
- Prev by Date: Re: Problems with changing playback rate
- Next by Date: Frame rate determination for WMV files
- Previous by thread: Re: Asf fastforward performance
- Next by thread: RE: Asf fastforward performance
- Index(es):
Relevant Pages
|
