linux-kernel - Re: [patch 0/2] mm: reduce reclaim stalls with heavy anon and dirty cache

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Message-Id: <20140124143003.2629e9c2c8c2595e805c8c25@linux-foundation.org>
Date:	Fri, 24 Jan 2014 14:30:03 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Johannes Weiner <hannes@...xchg.org>
Cc:	Tejun Heo <tj@...nel.org>, Rik van Riel <riel@...hat.com>,
	Mel Gorman <mgorman@...e.de>, linux-mm@...ck.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [patch 0/2] mm: reduce reclaim stalls with heavy anon and dirty
 cache

On Fri, 24 Jan 2014 17:03:02 -0500 Johannes Weiner <hannes@...xchg.org> wrote:

> Tejun reported stuttering and latency spikes on a system where random
> tasks would enter direct reclaim and get stuck on dirty pages.  Around
> 50% of memory was occupied by tmpfs backed by an SSD, and another disk
> (rotating) was reading and writing at max speed to shrink a partition.

Do you think this is serious enough to squeeze these into 3.14?
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