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From: Andi Kleen <ak@suse.de>
To: Hugh Dickins <hugh@veritas.com>
Cc: "Martin J. Bligh" <mbligh@aracnet.com>,
	Brent Casavant <bcasavan@sgi.com>, Andi Kleen <ak@suse.de>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] Use MPOL_INTERLEAVE for tmpfs files
Date: Wed, 3 Nov 2004 10:01:12 +0100	[thread overview]
Message-ID: <20041103090112.GJ8907@wotan.suse.de> (raw)
In-Reply-To: <Pine.LNX.4.44.0411030826310.6096-100000@localhost.localdomain>

On Wed, Nov 03, 2004 at 08:44:32AM +0000, Hugh Dickins wrote:
> On Tue, 2 Nov 2004, Martin J. Bligh wrote:
> > 
> > Another way might be a tmpfs mount option ... I'd prefer that to a sysctl
> > personally, but maybe others wouldn't. Hugh, is that nuts?
> 
> Only nuts if I am, I was going to suggest the same: the sysctl idea seems
> very inadequate; a mount option at least allows the possibility of having
> different tmpfs files allocated with different policies at the same time.
> 
> But I'm not usually qualified to comment on NUMA matters, and my tmpfs
> maintenance shouldn't be allowed to get in the way of progress.  Plus
> I've barely been attending in recent days: back to normality tomorrow.

If you want to go more finegraid then you can always use numactl
or even libnuma in the application.  For a quick policy decision a sysctl 
is fine imho.

-Andi

WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <ak@suse.de>
To: Hugh Dickins <hugh@veritas.com>
Cc: "Martin J. Bligh" <mbligh@aracnet.com>,
	Brent Casavant <bcasavan@sgi.com>, Andi Kleen <ak@suse.de>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] Use MPOL_INTERLEAVE for tmpfs files
Date: Wed, 3 Nov 2004 10:01:12 +0100	[thread overview]
Message-ID: <20041103090112.GJ8907@wotan.suse.de> (raw)
In-Reply-To: <Pine.LNX.4.44.0411030826310.6096-100000@localhost.localdomain>

On Wed, Nov 03, 2004 at 08:44:32AM +0000, Hugh Dickins wrote:
> On Tue, 2 Nov 2004, Martin J. Bligh wrote:
> > 
> > Another way might be a tmpfs mount option ... I'd prefer that to a sysctl
> > personally, but maybe others wouldn't. Hugh, is that nuts?
> 
> Only nuts if I am, I was going to suggest the same: the sysctl idea seems
> very inadequate; a mount option at least allows the possibility of having
> different tmpfs files allocated with different policies at the same time.
> 
> But I'm not usually qualified to comment on NUMA matters, and my tmpfs
> maintenance shouldn't be allowed to get in the way of progress.  Plus
> I've barely been attending in recent days: back to normality tomorrow.

If you want to go more finegraid then you can always use numactl
or even libnuma in the application.  For a quick policy decision a sysctl 
is fine imho.

-Andi
--
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  reply	other threads:[~2004-11-03  9:01 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-02  1:07 [PATCH] Use MPOL_INTERLEAVE for tmpfs files Brent Casavant
2004-11-02  1:07 ` Brent Casavant
2004-11-02  1:43 ` Dave Hansen
2004-11-02  1:43   ` Dave Hansen
2004-11-02  9:13 ` Andi Kleen
2004-11-02  9:13   ` Andi Kleen
2004-11-02 15:46 ` Martin J. Bligh
2004-11-02 15:46   ` Martin J. Bligh
2004-11-02 15:55   ` Andi Kleen
2004-11-02 15:55     ` Andi Kleen
2004-11-02 16:55     ` Martin J. Bligh
2004-11-02 16:55       ` Martin J. Bligh
2004-11-02 22:17       ` Brent Casavant
2004-11-02 22:17         ` Brent Casavant
2004-11-02 22:51         ` Martin J. Bligh
2004-11-02 22:51           ` Martin J. Bligh
2004-11-03  1:12           ` Brent Casavant
2004-11-03  1:12             ` Brent Casavant
2004-11-03  1:30             ` Martin J. Bligh
2004-11-03  8:44           ` Hugh Dickins
2004-11-03  8:44             ` Hugh Dickins
2004-11-03  9:01             ` Andi Kleen [this message]
2004-11-03  9:01               ` Andi Kleen
2004-11-03 16:32               ` Brent Casavant
2004-11-03 16:32                 ` Brent Casavant
2004-11-03 21:00                 ` Martin J. Bligh
2004-11-03 21:00                   ` Martin J. Bligh
2004-11-08 19:58                   ` Brent Casavant
2004-11-08 19:58                     ` Brent Casavant
2004-11-08 20:57                     ` Martin J. Bligh
2004-11-08 20:57                       ` Martin J. Bligh
2004-11-09 19:04                     ` Hugh Dickins
2004-11-09 19:04                       ` Hugh Dickins
2004-11-09 20:09                       ` Martin J. Bligh
2004-11-09 20:09                         ` Martin J. Bligh
2004-11-09 21:08                         ` Hugh Dickins
2004-11-09 21:08                           ` Hugh Dickins
2004-11-09 22:07                           ` Martin J. Bligh
2004-11-09 22:07                             ` Martin J. Bligh
2004-11-10  2:41                       ` Brent Casavant
2004-11-10  2:41                         ` Brent Casavant
2004-11-10 14:20                         ` Hugh Dickins
2004-11-10 14:20                           ` Hugh Dickins
2004-11-11 19:48                       ` Hugh Dickins
2004-11-11 19:48                         ` Hugh Dickins
2004-11-11 23:10                         ` Brent Casavant
2004-11-11 23:10                           ` Brent Casavant
2004-11-15 22:07                         ` Brent Casavant
2004-11-15 22:07                           ` Brent Casavant

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