From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: A unresponsive file system can hang all I/O in the system on
	linux-2.6.23-rc6 (dirty_thresh problem?)
Date: Fri, 28 Sep 2007 11:12:09 +0200
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Cc: Andrew Morton <akpm@linux-foundation.org>,
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To: Chakri n <chakriin5@gmail.com>
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On Fri, 2007-09-28 at 02:01 -0700, Chakri n wrote:
> Thanks for explaining the adaptive logic.
>=20
> > However other devices will at that moment try to maintain a limit of 0,
> > which ends up being similar to a sync mount.
> >
> > So they'll not get stuck, but they will be slow.
> >
> >
>=20
> Sync should be ok, when the situation is bad like this and some one
> hijacked all the buffers.
>=20
> But, I see my simple dd to write 10blocks on local disk never
> completes even after 10 minutes.
>=20
> [root@h46 ~]# dd if=3D/dev/zero of=3D/tmp/x count=3D10
>=20
> I think the process is completely stuck and is not progressing at all.
>=20
> Is something going wrong in the calculations where it does not fall
> back to sync mode.

What kernel is that?


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