linux-kernel - Re: sluggish system responsiveness under higher IO load

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Date:	Sat, 14 Oct 2006 16:57:49 +0200
From:	Paolo Ornati <ornati@...twebnet.it>
To:	Matthias Dahl <mlkernel@...tal-soul.de>
Cc:	Jens Axboe <axboe@...e.de>, Mike Galbraith <efault@....de>,
	linux-kernel@...r.kernel.org
Subject: Re: sluggish system responsiveness under higher IO load

On Sat, 14 Oct 2006 16:39:57 +0200
Matthias Dahl <mlkernel@...tal-soul.de> wrote:

> I will give 2.6.19 a test in a few weeks when the dust of all the changes have 
> settled a bit. :-)

-rc2 is rock solid here, but if you want to wait...

> 
> As my Mike Galbraith suggested, I made some tests with renicing the IO 
> intensive applications. This indeed makes a hell of a difference. Currently I 
> am renicing everything that causes a lot of disk IO to a nice of 19. Even 
> though this doesn't fix it completely, the occasional short hangs have become 
> less common.

Renicing to avoid sluggish system with a simple "cp" or untar is at
best a workaround... so I say: go with .19 and see what happens !

:)

-- 
	Paolo Ornati
	Linux 2.6.19-rc2 on x86_64
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