Re: 2.6.22 - Suspend and Weird Load Averages

["Rafael J. Wysocki" <rjw@sisk.pl>]

On Wednesday, 18 July 2007 15:51, Parag Warudkar wrote:
> 
> For the first time since 1997 I have a machine (Mac Mini) running a 
> stock kernel which I am suspending/resuming for 2 days now without any 
> problems. Amongst the various hardware and kernel versions that I've 
> used so far this combination is the first to suspend/resume without issues!
> 
> But one thing that annoys me a bit is that the load averages spike up 
> quite a bit after resume although it doesn't feel like the machine is 
> loaded  -
> 
> Before Resume -
> parag@parag-desktop:~$ uptime
>  09:35:14 up  5:18,  2 users,  load average: 0.08, 0.87, 1.00
> After Resume -
> parag@parag-desktop:~$ uptime
>  09:36:37 up  5:18,  2 users,  load average: 12.53, 3.83, 1.98
> parag@parag-desktop:~$
> 
> Is this a known problem?

I think so.

This probably is due to the freezing of tasks.  Namely, the frozen tasks
are in TASK_UNINTERRUPTIBLE and add to the load average.

> Worth fixing? 

Cartainly.

Greetings,
Rafael


-- 
"Premature optimization is the root of all evil." - Donald Knuth