linux-kernel - Re: Chronic resource starvation.

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Message-ID: <1326693114.6446.158.camel@marge.simson.net>
Date:	Mon, 16 Jan 2012 06:51:54 +0100
From:	Mike Galbraith <efault@....de>
To:	Mike Mestnik <cheako@...emestnik.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Chronic resource starvation.

On Sun, 2012-01-15 at 23:43 -0600, Mike Mestnik wrote:

> Ahhh, as I had suspected I'm not the only one.

Far from it, IO related stalls have come up many times over the years.

> Does fdatasync still cause this problem?  I'm sure there must be
> some way to 'group' applications together that should be allowed to
> avoid this effect and even insert IO requests during the operation if
> given a high enough priority.

A lot of work was done, and it improved things a LOT, but beating hell
out of your interactive application's home has always been a bad idea,
and will likely always be so.

	-Mike

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