Re: uninterruptible sleep lockups

[Anthony DiSante <theant@nodivisions.com>]

Helge Hafting wrote:
> The infrastructure for that does not exist, so instead, the "killed" 
> process remains. Not all of it, but at least the memory pinned down by 
> the io request.  This overhead is typically small, and the overehad of 
> adding forced io abort to every driver might
> be larger than a handful of stuck processes.  It looks ugly, but perhaps 
> a ps flag that hides the ugly processes is enough.

I don't care about any overhead associated with stuck processes, nor do I 
care that they look ugly in the ps output.  What I care about is the fact 
that at least once a week on multiple systems with different hardware, some 
HW-related driver/process gets stuck, then immediately cascades its 
stuckness up to udevd or hald, and then I can't use any of my hardware 
anymore until I reboot.

-Anthony DiSante
http://nodivisions.com/