From: "Russ Cox" <rsc@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] output of ps(1) memory usage
Date: Fri, 21 Feb 2003 00:55:48 -0500 [thread overview]
Message-ID: <82b065d91f919c7c32a7dc45b32ffff9@plan9.bell-labs.com> (raw)
In-Reply-To: <f9bf101ea0dd4705646d4c182591e2ef@orthanc.cc.titech.ac.jp>
/proc/pid/segment shows you virtual memory allocation,
not physical. There is no way to find out which pages
in a process are swapped and which are not at a per-page
granularity. Of course, if /dev/swap tells you nothing is
swapped out, then nothing is swapped out. It is also hard
to tell what is not yet paged in.
You could walk around in the kernel's page tables,
but that's not portable and not very clean.
Russ
next prev parent reply other threads:[~2003-02-21 5:55 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-21 5:47 YAMANASHI Takeshi
2003-02-21 5:55 ` Russ Cox [this message]
2003-02-21 6:08 ` [9fans] alg to make a good colour palette for a graph George Michaelson
2003-02-21 6:39 ` Eric Grosse
2003-02-21 6:57 ` George Michaelson
2003-02-21 7:46 ` Skip Tavakkolian
2003-02-21 12:56 ` [9fans] " Jim Choate
2003-03-24 1:48 ` [9fans] UTF-8 handling in non-plan9 app: help finding bug George Michaelson
2003-03-24 2:31 ` Russ Cox
2003-03-24 3:01 ` David Presotto
2003-03-25 16:15 ` Boyd Roberts
2003-03-25 17:04 ` Russ Cox
2003-03-25 17:13 ` Boyd Roberts
2003-03-25 17:05 ` Jack Johnson
2003-03-25 17:14 ` Boyd Roberts
2003-03-25 22:55 ` George Michaelson
-- strict thread matches above, loose matches on Subject: below --
2003-02-21 7:09 [9fans] output of ps(1) memory usage YAMANASHI Takeshi
2003-02-21 15:06 ` Russ Cox
2003-02-21 3:09 okamoto
2003-02-21 2:43 David Presotto
2003-02-21 2:34 okamoto
2003-02-21 2:37 ` Russ Cox
[not found] <uncover@beat.cc.titech.ac.jp>
2003-02-21 2:27 ` YAMANASHI Takeshi
2003-02-21 2:30 ` Russ Cox
2003-02-21 2:42 ` Scott Schwartz
2003-02-21 2:06 okamoto
2003-02-21 2:08 ` Russ Cox
2003-02-21 1:55 okamoto
2003-02-21 0:51 okamoto
2003-02-21 1:10 ` Russ Cox
2003-02-21 1:18 ` rob pike, esq.
2003-02-21 2:23 ` David Presotto
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