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Date: Fri, 17 Aug 2007 10:44:44 +0800 From: Fengguang Wu <wfg@...l.ustc.edu.cn> To: Matt Mackall <mpm@...enic.com> Cc: Andrew Morton <akpm@...l.org>, John Berthels <jjberthels@...il.com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH 1/4] maps: PSS(proportional set size) accounting in smaps On Thu, Aug 16, 2007 at 09:13:47PM -0500, Matt Mackall wrote: > On Fri, Aug 17, 2007 at 06:05:17AM +0800, Fengguang Wu wrote: > > The "proportional set size" (PSS) of a process is the count of pages it has in > > memory, where each page is divided by the number of processes sharing it. So if > > a process has 1000 pages all to itself, and 1000 shared with one other process, > > its PSS will be 1500. > > - lwn.net: "ELC: How much memory are applications really using?" > > > > The PSS proposed by Matt Mackall is a very nice metic for measuring an process's > > memory footprint. So collect and export it via /proc/<pid>/smaps. > > > > Matt Mackall's pagemap/kpagemap and John Berthels's exmap can also do the job. > > They are comprehensive tools. But for PSS, let's do it in the simple way. > > It's a bit odd that you attribute the description of PSS to LWN rather > than me. But anyway: > > Acked-by: Matt Mackall <mpm@...enic.com> Sorry and thank you! I'll change it in the next take. - 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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