[mythtv-users] tests: CPU load and capture size

[mOjO]

Dennis Lou wrote:

>From: Ray Olszewski <ray at comarre.com>
>  
>
>>System: Cel 1.7 GHz, 256 MB PC133 SDRAM
>>    
>>
>
>PC133 SDRAM?  A bit low on the memory bandwidth,
>aren't you?
>
>  
>
>>"live" TV at 320x240:   7-12% CPU "user" usage
>>        backend: 2-8%
>>        frontend: 2-4%
>>        system: 2-5%
>>
>>"live" TV at 640x480:   99-100% CPU "user" usage
>>        backend: 75%
>>        frontend: 19%
>>        system: 4%
>>    
>>
>
>QVGA resolution is  150kB of YV12 data per frame while
>VGA resolution is 600kB.  That poor little Cel 1.7Ghz
>only has 128kB of L2 cache.  Maybe you have a
>memory bandwidth problem?
>
>-Dennis
>
>  
>
However, i got very similar results with an Athlon XP 1700 and 512MB of 
PC2100 DDR... there was a huge cpu difference between 640x480 and 
320x240 and I have the memory/cpu bandwidth.