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Open Source and information security mailing list archives
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Date: Sun, 8 Nov 2009 18:04:53 +0100 From: Pavel Machek <pavel@....cz> To: Christoph Lameter <cl@...ux-foundation.org> Cc: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-mm@...ck.org" <linux-mm@...ck.org>, "hugh.dickins@...cali.co.uk" <hugh.dickins@...cali.co.uk>, akpm@...ux-foundation.org Subject: Re: [PATCH] show per-process swap usage via procfs On Thu 2009-11-05 10:04:01, Christoph Lameter wrote: > On Thu, 5 Nov 2009, KOSAKI Motohiro wrote: > > > > On Wed, 4 Nov 2009, KAMEZAWA Hiroyuki wrote: > > > > > > > Now, anon_rss and file_rss is counted as RSS and exported via /proc. > > > > RSS usage is important information but one more information which > > > > is often asked by users is "usage of swap".(user support team said.) > > > > > > Hmmm... Could we do some rework of the counters first so that they are per > > > cpu? > > > > per-cpu swap counter? > > It seems overkill effort.... > > The other alternative is to use atomic ops which are significantly slower > and have an impact on critical sections. ...but compared to disk i/o, overhead should be almost zero, right? Keep it simple... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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