linux-kernel - Re: Network receive stall avoidance (was [PATCH 2/9] deadlock prevention core)

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Message-Id: <20060819002848.e6884792.akpm@osdl.org>
Date:	Sat, 19 Aug 2006 00:28:48 -0700
From:	Andrew Morton <akpm@...l.org>
To:	Daniel Phillips <phillips@...gle.com>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	David Miller <davem@...emloft.net>, riel@...hat.com,
	tgraf@...g.ch, linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, Mike Christie <michaelc@...wisc.edu>
Subject: Re: Network receive stall avoidance (was [PATCH 2/9] deadlock
 prevention core)

On Fri, 18 Aug 2006 21:14:09 -0700
Daniel Phillips <phillips@...gle.com> wrote:

> So rather than just the word deadlock, let us add "or atomic 0 order
> alloc failure during TCP receive" to the challenge.  Fair?

If it's significantly performance-affecting in any way which is at all likely to 
affect anyone, sure.

You can get those warnings now with regular networking using e1000, due to
a combination of excessive default rx ringsize and incorrect VM tuning.
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