[mythtv-users] Load goes through the roof at times since installing 29

Mark Perkins perkins1724 at hotmail.com
Tue Nov 7 02:33:14 UTC 2017


On 7 November 2017 10:33:46 am Mark Perkins <perkins1724 at hotmail.com> wrote:

> On 7 November 2017 9:58:43 am Ian Evans <dheianevans at gmail.com> wrote:
>
>>> As was already mentioned that swapping should be checked. I don't know
>>> what your top showed from 0.27 times but 20% CPU load for three recordings
>>> plus a commflag job on 2011 hardware sounded fine to me. I couldn't see the
>>> problem there. But swapping - particularly 500+ MiB - that sounds awful and
>>> sounds like the symptoms you are seeing.
>>>
>>> Try shift + m while in top to sort by % memory used and post that.
>>>
>>> Do you accidentally have multiple FE processes running?
>>>
>>>
>> Of course when I NEED a spike I don't get one. Here's a top with one
>> recording and commflag. Load is over 1 though. Will try again if I see a 20+
>>
>>
>
> I suspect that the high load will return as soon as your system starts swapping lots of mem again. But I think the issue (cause) is probably the mem swapping.
>
>
>
>
> ----------
> _______________________________________________

Specifically this might be an interesting read - http://www.brendangregg.com/blog/2017-08-08/linux-load-averages.html

Linux load averages also reflect demand for other system resources. Including swap usage.

For CPU utilisation using the per-process figures from top might be better.
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