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 <[email protected]>
--
Mathematics is the supreme nostalgia of our time.
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