From: Rafael Aquini <aquini@linux.com>
To: Russ Anderson <rja@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>,
linux-mm <linux-mm@kvack.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Christoph Lameter <cl@linux.com>,
rja@americas.sgi.com
Subject: Re: [PATCH] [BUGFIX] mm: hugepages can cause negative commitlimit
Date: Fri, 3 Jun 2011 00:08:43 -0300 [thread overview]
Message-ID: <20110603030841.GB10530@optiplex.tchesoft.com> (raw)
In-Reply-To: <20110602040821.GA7934@sgi.com>
Howdy Russ,
On Wed, Jun 01, 2011 at 11:08:31PM -0500, Russ Anderson wrote:
>
> Yes, it fixes the inconsistency in reporting totalram_pages.
Thanks alot for the feedback.
> There seems to be another issue. 1G hugepages can be allocated at boot time, but
> cannot be allocated at run time. "default_hugepagesz=1G hugepagesz=1G hugepages=1" on
> the boot line works. With "default_hugepagesz=1G hugepagesz=1G" the command
> "echo 1 > /proc/sys/vm/nr_hugepages" fails.
>
> uv4-sys:~ # echo 1 > /proc/sys/vm/nr_hugepages
> -bash: echo: write error: Invalid argument
That's not an issue, actually. It seems to be , unfortunately,
an implementation characteristic, due to an imposed arch constraint.
Further reference: http://lwn.net/Articles/273661/
Cheers!
--
Rafael Aquini <aquini@linux.com>
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prev parent reply other threads:[~2011-06-03 3:09 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-18 15:34 Russ Anderson
2011-05-19 0:51 ` Rafael Aquini
2011-05-19 4:56 ` Russ Anderson
2011-05-19 13:37 ` Rafael Aquini
2011-05-19 22:11 ` Russ Anderson
2011-05-20 20:04 ` Andrew Morton
2011-05-20 22:30 ` Rafael Aquini
2011-05-26 21:07 ` Rafael Aquini
2011-05-27 22:22 ` Russ Anderson
2011-06-02 4:08 ` Russ Anderson
2011-06-03 2:55 ` [PATCH] mm: fix negative commitlimit when gigantic hugepages are allocated Rafael Aquini
2011-06-03 12:07 ` Russ Anderson
2011-06-09 23:44 ` Andrew Morton
2011-06-13 21:11 ` Rafael Aquini
2011-06-13 21:31 ` Andrew Morton
2011-06-03 3:08 ` Rafael Aquini [this message]
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