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Date: Wed, 28 Sep 2011 17:13:09 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCH 6/9] kstaled: rate limit pages scanned per second.
Message-Id: <20110928171309.b45c684f.kamezawa.hiroyu@jp.fujitsu.com>
In-Reply-To: <1317170947-17074-7-git-send-email-walken@google.com>
References: <1317170947-17074-1-git-send-email-walken@google.com>
	<1317170947-17074-7-git-send-email-walken@google.com>
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To: Michel Lespinasse <walken@google.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>, Dave Hansen <dave@linux.vnet.ibm.com>, Rik van Riel <riel@redhat.com>, Balbir Singh <bsingharora@gmail.com>, Peter Zijlstra <a.p.zijlstra@chello.nl>, Andrea Arcangeli <aarcange@redhat.com>, Johannes Weiner <jweiner@redhat.com>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Hugh Dickins <hughd@google.com>, Michael Wolf <mjwolf@us.ibm.com>

On Tue, 27 Sep 2011 17:49:04 -0700
Michel Lespinasse <walken@google.com> wrote:

> Scan some number of pages from each node every second, instead of trying to
> scan the entime memory at once and being idle for the rest of the configured
> interval.
> 
> In addition to spreading the CPU usage over the entire scanning interval,
> this also reduces the jitter between two consecutive scans of the same page.
> 
> 
> Signed-off-by: Michel Lespinasse <walken@google.com>

Does this scan thread need to be signle thread ?

Thanks,
-Kame


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