From: Andrew Morton <akpm@linux-foundation.org>
To: David Rientjes <rientjes@google.com>
Cc: Jiang Liu <liuj97@gmail.com>,
sworddragon2@aol.com, bugzilla-daemon@bugzilla.kernel.org,
linux-mm@kvack.org
Subject: Re: [Bug 53501] New: Duplicated MemTotal with different values
Date: Tue, 12 Feb 2013 19:59:29 -0800 [thread overview]
Message-ID: <20130212195929.7cd2e597.akpm@linux-foundation.org> (raw)
In-Reply-To: <alpine.DEB.2.02.1302121742370.5404@chino.kir.corp.google.com>
On Tue, 12 Feb 2013 17:45:42 -0800 (PST) David Rientjes <rientjes@google.com> wrote:
> > > The installed memory on my system is 16 GiB. /proc/meminfo is showing me
> > > "MemTotal: 16435048 kB" but /sys/devices/system/node/node0/meminfo is
> > > showing me "Node 0 MemTotal: 16776380 kB".
> > >
> > > My suggestion: MemTotal in /proc/meminfo should be 16776380 kB too. The old
> > > value of 16435048 kB could have its own key "MemAvailable".
> >
> > hm, mine does that too. A discrepancy between `totalram_pages' and
> > NODE_DATA(0)->node_present_pages.
> >
> > I don't know what the reasons are for that but yes, one would expect
> > the per-node MemTotals to sum up to the global one.
> >
>
> I'd suspect it has something to do with 9feedc9d831e ("mm: introduce new
> field "managed_pages" to struct zone") and 3.8 would be the first kernel
> release with this change. Is it possible to try 3.7 or, better yet, with
> this patch reverted?
My desktop machine at google in inconsistent, as is the 2.6.32-based
machine, so it obviously predates 9feedc9d831e.
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next prev parent reply other threads:[~2013-02-13 4:00 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-53501-27@https.bugzilla.kernel.org/>
2013-02-13 0:51 ` [Bug 53501] New: Duplicated MemTotal with different values Andrew Morton
2013-02-13 1:45 ` David Rientjes
2013-02-13 3:59 ` Andrew Morton [this message]
2013-02-14 3:19 ` David Rientjes
2013-02-14 4:01 ` Jiang Liu
2013-02-15 0:26 ` David Rientjes
2013-02-20 5:21 ` Simon Jeons
2013-02-20 7:09 ` David Rientjes
2013-03-02 2:21 ` Simon Jeons
2013-03-04 11:18 ` David Rientjes
2013-03-04 23:39 ` Simon Jeons
2013-03-05 21:53 ` David Rientjes
2013-02-16 16:27 ` [PATCH 1/2] vm: add 'MemManaged' field to /proc/meminfo and /sys/.../nodex/meminfo Jiang Liu
2013-02-19 21:29 ` David Rientjes
2013-02-20 17:27 ` [PATCH v2] mm: let /proc/meminfo report physical memory installed as "MemTotal" Jiang Liu
2013-02-20 22:49 ` Andrew Morton
2013-02-21 17:26 ` Jiang Liu
2013-02-21 21:31 ` Andrew Morton
2013-02-22 19:22 ` Jiang Liu
2013-02-16 16:27 ` [PATCH 2/2] mm: protect si_meminfo() and si_meminfo_node() from memory hotplug operations Jiang Liu
2013-02-19 21:32 ` David Rientjes
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