linux-kernel - [RFC PATCH 0/4] pseudo-interleaving NUMA placement

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Message-Id: <1385503408-30041-1-git-send-email-riel@redhat.com>
Date:	Tue, 26 Nov 2013 17:03:24 -0500
From:	riel@...hat.com
To:	linux-mm@...ck.org
Cc:	linux-kernel@...r.kernel.org, mgorman@...e.de, chegu_vinod@...com,
	peterz@...radead.org
Subject: [RFC PATCH 0/4] pseudo-interleaving NUMA placement

This patch set attempts to implement a pseudo-interleaving
policy for workloads that do not fit in one NUMA node.

For each NUMA group, we track the NUMA nodes on which the
workload is actively running, and try to concentrate the
memory on those NUMA nodes.

Unfortunately, the scheduler appears to move tasks around
quite a bit, leading to nodes being dropped from the
"active nodes" mask, and re-added a little later, causing
excessive memory migration.

I am not sure how to solve that. Hopefully somebody will
have an idea :)

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