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

[Karl Newman]

On Mon, Apr 21, 2014 at 7:27 PM, John Finlay <finlay at moeraki.com> wrote:

> 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.
>

I know nothing about mythbuntu, sorry, but any chance you're using 32 bit?
64 bit is more widely used and thus better tested these days.

Karl
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