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author | Fengguang Wu <wfg@mail.ustc.edu.cn> | 2008-02-04 22:28:56 -0800 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-05 09:44:16 -0800 |
commit | ec4dd3eb35759f9fbeb5c1abb01403b2fde64cc9 (patch) | |
tree | 0eaf4d91180556df61da6300463d946390ce55fb /include/asm-ia64/processor.h | |
parent | 61d5048f149572434daee0cce5e1374a8a7cf3e8 (diff) | |
download | linux-stable-ec4dd3eb35759f9fbeb5c1abb01403b2fde64cc9.tar.gz linux-stable-ec4dd3eb35759f9fbeb5c1abb01403b2fde64cc9.tar.bz2 linux-stable-ec4dd3eb35759f9fbeb5c1abb01403b2fde64cc9.zip |
maps4: add proportional set size accounting in smaps
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.
Cc: John Berthels <jjberthels@gmail.com>
Cc: Bernardo Innocenti <bernie@codewiz.org>
Cc: Padraig Brady <P@draigBrady.com>
Cc: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-ia64/processor.h')
0 files changed, 0 insertions, 0 deletions