[REPOST][REPOST][REPOST] Killing processes in D state

[REPOST][REPOST][REPOST] Killing processes in D state

[Roy Sigurd Karlsbakk]

hi all

this discussion has been up a few times, but I want it again. I _REALLY_ want 
to be able to kill processes in D state. I am aware of that this is not good, 
but compared to other parts of the linux kernel, there's quite a lot suicidal 
stuff there already, so why not. There is, for instance, in 2.5, the 
possibility to forcably remove loaded modules - FAR worse than merely killing 
a userspace process in D state.

So please, dear kernel people, Free Thy Users From Those Terrible Unreasonable 
Reboots.

regards

roy
-- 
Roy Sigurd Karlsbakk, Datavaktmester
ProntoTV AS - http://www.pronto.tv/
Tel: +47 9801 3356

Computers are like air conditioners.
They stop working when you open Windows.

Re: [REPOST][REPOST][REPOST] Killing processes in D state

[Michael Buesch]

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On Monday 02 June 2003 11:58, Roy Sigurd Karlsbakk wrote:
> hi all
>
> this discussion has been up a few times, but I want it again. I _REALLY_
> want to be able to kill processes in D state. I am aware of that this is
> not good, but compared to other parts of the linux kernel, there's quite a
> lot suicidal stuff there already, so why not. There is, for instance, in
> 2.5, the possibility to forcably remove loaded modules - FAR worse than
> merely killing a userspace process in D state.
>
> So please, dear kernel people, Free Thy Users From Those Terrible
> Unreasonable Reboots.

I would _completely_ agree with this.

(One [REPOST] in subject is enough)

>
> regards
>
> roy

- --
Regards Michael Büsch
http://www.8ung.at/tuxsoft
 16:22:33 up 25 min,  1 user,  load average: 1.00, 0.99, 0.81

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Re: [REPOST][REPOST][REPOST] Killing processes in D state

[Pavel Machek]

Hi!

> this discussion has been up a few times, but I want it again. I _REALLY_ want 

So you need to implement it. I do not
see why you should bother mailing list
*3 times* with it...
-- 
				Pavel
Written on sharp zaurus, because my Velo1 broke. If you have Velo you don't need...

Re: [REPOST][REPOST][REPOST] Killing processes in D state

[Bill Davidsen]

On Mon, 2 Jun 2003, Roy Sigurd Karlsbakk wrote:

> this discussion has been up a few times, but I want it again. I _REALLY_ want 
> to be able to kill processes in D state. I am aware of that this is not good, 
> but compared to other parts of the linux kernel, there's quite a lot suicidal 
> stuff there already, so why not. There is, for instance, in 2.5, the 
> possibility to forcably remove loaded modules - FAR worse than merely killing 
> a userspace process in D state.
> 
> So please, dear kernel people, Free Thy Users From Those Terrible Unreasonable 
> Reboots.

Do you understand why processes in D state are unkillable? What do you
think you would gain by killing them, since the memory couldn't be safely
reused? Just not seeing the process in ps?

I can see wanting to avoid having processes in D state, but once you get
such a thing I don't see why the kernel should have a lot of code added to
hide a problem. A reboot *is* a way to kill a process in D state.

In general most of the process should page out, so you only lose some swap
space. I don't get processes in this state, so I can't really check the
RSS and verify that.

Tell the developers how you get the processes in that state and ask for
that to be prevented, and you will find a lot more support.

-- 
bill davidsen <davidsen@tmr.com>
  CTO, TMR Associates, Inc
Doing interesting things with little computers since 1979.