From: "Chris Friesen" <cfriesen@nortel.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>, linux-mm@kvack.org
Subject: Re: which fields in /proc/meminfo are orthogonal?
Date: Tue, 26 Jan 2010 14:47:26 -0600 [thread overview]
Message-ID: <4B5F54DE.7030302@nortel.com> (raw)
In-Reply-To: <4B5F3C9C.3050908@nortel.com>
On 01/26/2010 01:03 PM, Chris Friesen wrote:
> I'm currently trying to figure out which of the entries in /proc/meminfo
> are actually orthogonal to each other. Ideally I'd like to be able to
> add up the suitable entries and have it work out to the total memory on
> the system, so that I can then narrow down exactly where the memory is
> going. Is this feasable?
I've tried adding up
MemFree+Buffers+Cached+AnonPages+Mapped+Slab+PageTables+VmallocUsed
(hugepages are disabled and there is no swap)
Shortly after boot this gets me within about 3MB of MemTotal. However,
after 1070 minutes there is a 64MB difference between MemTotal and the
above sum.
Here's /proc/meminfo after 1070 minutes:
MemTotal: 4042848 kB
MemFree: 406112 kB
Buffers: 12072 kB
Cached: 3068368 kB
SwapCached: 0 kB
Active: 671200 kB
Inactive: 2711952 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 44 kB
Writeback: 0 kB
AnonPages: 235864 kB
Mapped: 30752 kB
Slab: 200156 kB
SReclaimable: 142828 kB
SUnreclaim: 57328 kB
PageTables: 4320 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 2021424 kB
Committed_AS: 2593116 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 21496 kB
VmallocChunk: 34359716779 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 3008 kB
DirectMap2M: 4190208 kB
Any ideas how to track down the missing memory?
Chris
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2010-01-26 20:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-26 19:03 Chris Friesen
2010-01-26 20:47 ` Chris Friesen [this message]
2010-01-26 23:48 ` Chris Friesen
2010-01-27 0:38 ` Andy Walls
2010-01-27 0:55 ` Jeff Dike
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4B5F54DE.7030302@nortel.com \
--to=cfriesen@nortel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox