All of lore.kernel.org
 help / color / mirror / Atom feed
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>

WARNING: multiple messages have this Message-ID (diff)
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>

--
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/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>

  parent reply	other threads:[~2011-06-03  3:09 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-18 15:34 [PATCH] [BUGFIX] mm: hugepages can cause negative commitlimit Russ Anderson
2011-05-18 15:34 ` Russ Anderson
2011-05-19  0:51 ` Rafael Aquini
2011-05-19  4:56   ` Russ Anderson
2011-05-19  4:56     ` Russ Anderson
2011-05-19 13:37     ` Rafael Aquini
2011-05-19 22:11       ` Russ Anderson
2011-05-19 22:11         ` Russ Anderson
2011-05-20 20:04         ` Andrew Morton
2011-05-20 20:04           ` Andrew Morton
2011-05-20 22:30           ` Rafael Aquini
2011-05-20 22:30             ` Rafael Aquini
2011-05-26 21:07             ` Rafael Aquini
2011-05-26 21:07               ` Rafael Aquini
2011-05-27 22:22               ` Russ Anderson
2011-05-27 22:22                 ` Russ Anderson
2011-06-02  4:08               ` 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  2:55                   ` Rafael Aquini
2011-06-03 12:07                   ` Russ Anderson
2011-06-03 12:07                     ` Russ Anderson
2011-06-09 23:44                   ` Andrew Morton
2011-06-09 23:44                     ` Andrew Morton
2011-06-13 21:11                     ` Rafael Aquini
2011-06-13 21:11                       ` Rafael Aquini
2011-06-13 21:31                       ` Andrew Morton
2011-06-13 21:31                         ` Andrew Morton
2011-06-03  3:08                 ` Rafael Aquini [this message]
2011-06-03  3:08                   ` [PATCH] [BUGFIX] mm: hugepages can cause negative commitlimit Rafael Aquini

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=20110603030841.GB10530@optiplex.tchesoft.com \
    --to=aquini@linux.com \
    --cc=aarcange@redhat.com \
    --cc=akpm@linux-foundation.org \
    --cc=cl@linux.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=rja@americas.sgi.com \
    --cc=rja@sgi.com \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.