[mythtv-users] How high is cpu usage supposed to be?

[Taylor Dondich]

Let me describe what I had, I *knew* I forgot something.  ;)

Running an AMD T-Bird 1.1ghz proc with 512m of ram.
Running an ATI TV Wonder (PCI, not VE or USB)

I'm also running the nvidia drivers from nvidia.  :/

Taylor

Ray Olszewski wrote:
> At 12:38 PM 7/11/2003 -0700, Taylor Dondich wrote:
> 
>> I'm running everything on one machine.  When I start playing livetv, 
>> cpu usage goes to 93% user, approx 5.0% system.  The mythbackend is 
>> taking up 70% of cpu and mythfrontend takes up about 30%.  I'm 
>> wondering if this is abnormal, because sometimes, after a period of 
>> livetv playback, the system freezes up.  I'm now monitoring it from a 
>> window to see what happens, but I'd like to know if anyone has any input.
> 
> 
> 
> As posed, this is a meaningless question. Whether CPU usage is 
> "abnormal" is not independent of --
> 
>         1. Type and speed of CPU. What you report would be very hight 
> for a fast P4 but impressively low for a 533 MHz Celeron.
> 
>         2. Type of vidcap card. Cards with hardware encoding use way 
> less CPU than (say) bttv cards.
> 
>         3. Encoding settings. MPEG4 uses more CPU than RTJPEG. More 
> capture resolution and/or greater bps settings use more CPU. I'd imagine 
> (never tested this) that NTSC (29.97 fps) uses more CPU than PAL (25 fps).
> 
> Possible causes of abnormally high CPU use are an X driver that does not 
> (either properly or at all)  support XVideo, failure to use DMA on hard 
> drives, and noisy source signal. But it is impossible to say whether 
> your CPU usage is abnormal or not.
> 
> 
> 
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-- 
Taylor Dondich
Majik Networks
www.majiknetworks.com
702-896-3470 - Office
702-617-9613 - Fax