FW: Re: Xorg with ATI / RV370 sneakily eats half my CPU with empty screen?

[Frank de Lange]

John Clarke wrote:
> Hi Michel
>  
>> The above indicates this is due to the 'isis' process, not X?
>  
> Is that possible?  isis is my big number-crunching task - I/O from files and very occasional (every 20 seconds or so) printf()s to show progress.  Absolutely no X calls - not even linked to the X libraries.  How could that be hammering Xorg?  Moreover Xorg's memory usage seems a little extreme -- 400MB?  My screen is otherwise idle.
>  
> So far Xorg has clocked up nearly a day of CPU time - that's an extra day I'm waiting for my results, so the current setup is unacceptable.
>  
> Can someone please let me know how to enable more logging, or some other way to debug this.
>  

Looks to me like X does not use more than 1.7% of CPU so that is not out
of the ordinary. To find out more about where the memory goes you can
install xrestop to see if something leaks somewhere. Either run it
interactivally and watch the numbers or run it in batch mode (-b) and
redirect the output to a file. You might be able to find the culprit
that way.

Cheers//Frank