From: Rik van Riel <riel@redhat.com>
To: dhillf@sina.com
Cc: Mel Gorman <mgorman@suse.de>,
Andrea Arcangeli <aarcange@redhat.com>,
linux-mm <linux-mm@kvack.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Hillf Danton <dhillf@gmail.com>
Subject: Re: [RFC PATCH] ANB(Automatic NUMA Balancing): erase mm footprint of migrated page
Date: Thu, 12 Sep 2013 21:41:11 -0400 [thread overview]
Message-ID: <52326D37.8040400@redhat.com> (raw)
In-Reply-To: <20130913004538.A7AA3428001@webmail.sinamail.sina.com.cn>
On 09/12/2013 08:45 PM, Hillf Danton wrote:
> If a page monitored by ANB is migrated, its footprint should be erased from
> numa-hint-fault account, because it is no longer used. Or two pages, the
> migrated page and its target page, are used in the view of task placement.
>
>
> Signed-off-by: Hillf Danton <dhillf@gmail.com>
NAK
The numa faults buffer contains the number of pages on each
node that the task recently faulted on.
If the page got migrated, it is only counted on the new node,
not on the old one. That means there is no need to subtract
it on the old node.
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next prev parent reply other threads:[~2013-09-13 1:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-13 0:45 [RFC PATCH] ANB(Automatic NUMA Balancing): erase mm footprint of migrated page Hillf Danton
2013-09-13 1:41 ` Rik van Riel [this message]
-- strict thread matches above, loose matches on Subject: below --
2013-09-13 6:52 Hillf Danton
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