From: riel@redhat.com
To: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org, mgorman@suse.de,
chegu_vinod@hp.com, peterz@infradead.org
Subject: [RFC PATCH 0/4] pseudo-interleaving NUMA placement
Date: Tue, 26 Nov 2013 17:03:24 -0500 [thread overview]
Message-ID: <1385503408-30041-1-git-send-email-riel@redhat.com> (raw)
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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next reply other threads:[~2013-11-26 22:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-26 22:03 riel [this message]
2013-11-26 22:03 ` [RFC PATCH 1/4] remove p->numa_migrate_deferred riel
2013-11-26 22:03 ` [RFC PATCH 2/4] track from which nodes NUMA faults are triggered riel
2013-11-26 22:03 ` [RFC PATCH 3/4] build per numa_group active node mask from faults_from statistics riel
2013-11-26 22:03 ` [RFC PATCH 4/4] use active_nodes nodemask to decide on numa migrations riel
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