On Mon, Feb 14, 2005 at 08:04:52PM +0800, Tj wrote: > Brad Templeton wrote: > > >>Brad Templeton wrote: > >>Luckily my machine is powerful enough withou XvMC, so I seldom use it. > >>HDTV on my machine uses to be around 20%-25%, but now takes 30%-35% in > >>0.17. Abit high, but far from being a problem. > >> > >> > > > >What machine has numbers like that? Dual processor I presume? > > > > > > > > > Errr.. Your kidding me rite? What figures do you have? Hope I have the > right values... The figures I quote are from the 9th column in top. > > My machine is just a Pentium-4 2.6 (lowly by today's standards) with 1GB > RAM.... 720p (Channel 7 HD) around 22%-25% frontend... 1080i (Channel 9 > HD, using PS mode, so got alot of green boxes) around 30-35%...
The "9th column" in Top is the cpu usage for a particular process. Several processes are used in the playing of HD, most nobably the X server itself and then there is time spent in drivers that may not be allocated to a process. Anyway, run the program "mpstat" (or mpstat -P ALL if doing SMP or Hyperthread) to find out more realistic numbers. On Athlon-3000s people typically see about 80% usage. On P4-3ghz we see more like 55% usage but that number is probably a touch misleading due to hyperthreading.
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