Ubuntu 20.04 sudden crash while processing, how to know why?

[Bo Berglund]

On Sat, 13 Mar 2021 08:05:18 +0000, Colin Law <clanlaw at gmail.com> wrote:

>The DNS warning is nothing to worry about.  A log like that indicates a
>sudden processor stop such as a power off or a hardware problem.  I would
>be considering such issues as the power supply, system overheating, a
>connector that needs reseating or something along those lines.

I have started a conversion again now and what happens is that the fan starts
running full speed almost immediately after I start the job.

And after less than a minute the notebook shuts off!
Seems like an overheating problem...

I have used my Windows10 computer earlier to do the conversions (in a batch job)
using the same ffmpeg command. I have noticed that when I do that the Win10 PC
uses a LOT of CPU cycles, Task Manager shows upwards of 80% CPU when the convert
runs.

Is there a way in Ubuntu to limit CPU usage for a command like ffmpeg which uses
up a lot of CPU, possibly overheating the whole system?


-- 
Bo Berglund
Developer in Sweden