[mythtv-users] Help With High CPU Load on Backend and Frontend

[Raymond Wagner]

On 2/10/2014 4:46 PM, Andrew McCauley wrote:
> Cpu(s): 13.7%us, 37.6%sy,  0.0%ni, 47.0%id,  1.6%wa,  0.0%hi,  0.1%si, 
>  0.0%st

Having that much CPU tied up under "system" often means you've got some 
spinlock waiting on IO.

> Mem:   3973608k total,  3807508k used,   166100k free,    12484k buffers
> Swap:  8062968k total,  1013136k used,  7049832k free,  2679528k cached

Having a full GB of swap used might indicate it's waiting on memory 
access off the disk.  I would first check to see why you're using so 
much swap.  Swap should really only ever get used under emergency 
circumstances.

> Cpu(s):  5.0%us, 21.1%sy,  0.0%ni, 73.9%id,  0.0%wa,  0.0%hi,  0.0%si, 
>  0.0%st
> Mem:   1017692k total,   915964k used,   101728k free,    29844k buffers
> Swap:  1999868k total,   119860k used,  1880008k free,   347552k cached

Same thing down here, heavy "system" CPU usage, and significant swap usage.

I doubt swap is the entire cause of your issue, but it's something that 
should be resolved none the less.
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