[mythtv-users] FEs have high CPU and memory usage

[John Finlay]

On 4/21/2014 5:23 PM, Stephen P. Villano wrote:
> On 4/21/14, 8:22 PM, John Finlay wrote:
>> On 4/21/2014 3:47 PM, Stephen P. Villano wrote:
>>> On 4/21/14, 5:50 PM, John Finlay wrote:
>>>> On 4/21/2014 2:26 PM, Mark Perkins wrote:
>>>>>> On 22 Apr 2014, at 4:48 am, "John Finlay" <finlay at moeraki.com> wrote:
>>>>>>
>>>>>> I have three FEs with 2GB that slowly over the course of a week or
>>>>>> so use use up all the memory and eventually crash I think may be due
>>>>>> to running out of swap. The amount of memory usage seems to be
>>>>>> related to the duty cycle of the FE i.e. the more that the FE is
>>>>>> used the faster it uses up memory.
>>>>>>
>>>>>> These systems are all running Mythbuntu 12.04 with fixes/0.27. The
>>>>>> CPU usage also seems to be high on these systems when they are idle
>>>>>> 30%-72%. I don't see anything in the logs that indicates what's
>>>>>> causing the apparently high CPU and memory usage but I probably need
>>>>>> to run with different logging options.
>>>>>>
>>>>>> Is this level of CPU and memory usage normal? What would be a good
>>>>>> approach to determining why these systems are using so many
>>>>>> resources when idle?
>>>>>>
>>>>>> john
>>>>>> _______________________________________________
>>>>> My main FE runs 24/7 and on idle sits at about 1-2% CPU usage. It has
>>>>> 4Gb memory but is only using 1.7Gb at the moment.
>>>>>
>>>>> Run 'top' from a command prompt to see what your memory usage is, it
>>>>> will also show you what program(s) are using your CPU, and work from
>>>>> there.
>>>>>
>>>> I forgot to mention that I am using top to see what the CPU and memory
>>>> usage is. I also forgot to mention that mythfrontend.real is the
>>>> process that is using 30+% of the CPU and 30%-72% of the memory which
>>>> seems unexpectedly high for idle usage.
>>>>
>>>> John
>>>> _______________________________________________
>>> I have an FE playing on a notebook computer. It's currently playing a
>>> movie as well.
>>>    PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>>> 20   0 3424m 535m  56m R   56 26.9 517:12.52
>>> mythfrontend.re
>>>
>>> On my atom netbook, which is idle:
>>> 20   0  585492  99916  40200 S   6.3  9.9 109:33.51 mythfrontend.re
>>>
>>> I'd check top and even try htop to see what is chewing up resources.
>>> Myth doesn't use up *that* much horsepower.
>>>
>>>
>> Unfortunately mythfrontend.real seems to be the culprit on all three FEs.
>> _______________________________________________
> That's *really* strange. What distro are you on? What hardware are you
> running on? What else is installed? Which version of Myth are you running?
>
>
All are running Mythbuntu 12.04 with fixes/0.27. Two are Nvidia ION 
based systems and the third is an AMD dual core with an Nvidia 210.
These are dedicated to Mythtv so I haven't installed anything beyond the 
basic distro and the Nvidia driver.

If I restart mythfrontend it initially runs with about 2% CPU and 13% 
memory when idle. When I play a recording it runs at 18% CPU and 20% 
memory. While browsing the recordings the memory usage rises to 40% 
which I presume is the result of loading all the coverart and fanart images.