From: Matt Mackall <mpm@selenic.com>
To: Fengguang Wu <wfg@mail.ustc.edu.cn>
Cc: Andrew Morton <akpm@osdl.org>,
John Berthels <jjberthels@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/4] maps: PSS(proportional set size) accounting in smaps
Date: Thu, 16 Aug 2007 21:13:47 -0500 [thread overview]
Message-ID: <20070817021346.GH30556@waste.org> (raw)
In-Reply-To: <20070816220849.064901548@mail.ustc.edu.cn>
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@selenic.com>
--
Mathematics is the supreme nostalgia of our time.
next prev parent reply other threads:[~2007-08-17 2:12 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070816220516.782145952@mail.ustc.edu.cn>
2007-08-16 22:05 ` [PATCH 0/4] process memory footprints in proc/<pid>/[s|p]maps Fengguang Wu
[not found] ` <20070816220849.064901548@mail.ustc.edu.cn>
2007-08-16 22:05 ` [PATCH 1/4] maps: PSS(proportional set size) accounting in smaps Fengguang Wu
2007-08-17 2:13 ` Matt Mackall [this message]
[not found] ` <20070817024443.GA5521@mail.ustc.edu.cn>
2007-08-17 2:44 ` Fengguang Wu
[not found] ` <20070816220849.313377588@mail.ustc.edu.cn>
2007-08-16 22:05 ` [PATCH 3/4] maps: introduce generic_maps_open() Fengguang Wu
[not found] ` <20070816220849.192029043@mail.ustc.edu.cn>
2007-08-16 22:05 ` [PATCH 2/4] maps: address based vma walking Fengguang Wu
2007-08-17 2:16 ` Matt Mackall
[not found] ` <20070817025454.GB5521@mail.ustc.edu.cn>
2007-08-17 2:54 ` Fengguang Wu
[not found] ` <20070816220849.472883642@mail.ustc.edu.cn>
2007-08-16 22:05 ` [PATCH 4/4] maps: /proc/<pid>/pmaps interface - memory maps in granularity of pages Fengguang Wu
2007-08-17 2:38 ` Matt Mackall
[not found] ` <20070817034437.GC5521@mail.ustc.edu.cn>
2007-08-17 3:44 ` Fengguang Wu
2007-08-17 3:56 ` Matt Mackall
[not found] ` <20070817064727.GA6723@mail.ustc.edu.cn>
2007-08-17 6:47 ` Fengguang Wu
2007-08-17 16:58 ` Matt Mackall
[not found] ` <20070818024831.GA7856@mail.ustc.edu.cn>
2007-08-18 2:48 ` Fengguang Wu
2007-08-18 6:40 ` Matt Mackall
[not found] ` <20070818084531.GB5277@mail.ustc.edu.cn>
2007-08-18 8:45 ` Fengguang Wu
2007-08-18 17:22 ` Matt Mackall
[not found] ` <20070819004008.GA5297@mail.ustc.edu.cn>
2007-08-19 0:40 ` Fengguang Wu
[not found] ` <20070818103146.GA6744@mail.ustc.edu.cn>
2007-08-18 10:31 ` Fengguang Wu
[not found] <20070819075410.411207640@mail.ustc.edu.cn>
[not found] ` <20070819075547.445659254@mail.ustc.edu.cn>
2007-08-19 7:54 ` [PATCH 1/4] maps: PSS(proportional set size) accounting in smaps Fengguang Wu
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