From: Andi Kleen <ak@suse.de>
To: Christoph Lameter <clameter@sgi.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
Gleb Natapov <glebn@voltaire.com>, linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] Document Linux Memory Policy
Date: Mon, 4 Jun 2007 22:23:41 +0200 [thread overview]
Message-ID: <200706042223.41681.ak@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.0706041003040.23603@schroedinger.engr.sgi.com>
>
> The other issues will still remain! This is a fundamental change to the
> nature of memory policies. They are no longer under the control of the
> task but imposed from the outside.
To be fair this can already happen with tmpfs (and hopefully soon hugetlbfs
again -- i plan to do some other work there anyways and will put
that in too) . But with first touch it is relatively benign.
> If one wants to do this then the whole
> scheme of memory policies needs to be reworked and rethought in order to
> be consistent and usable. For example you would need the ability to clear
> a memory policy.
That's just setting it to default.
Frankly I think this whole discussion is quite useless without discussing
concrete use cases. So far I haven't heard any where this any file policy
would be a great improvement. Any further complication of the code which
is already quite complex needs a very good rationale.
-Andi
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next prev parent reply other threads:[~2007-06-04 20:23 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-29 19:33 [PATCH] Document Linux Memory Policy Lee Schermerhorn
2007-05-29 20:04 ` Christoph Lameter
2007-05-29 20:16 ` Andi Kleen
2007-05-30 16:17 ` Lee Schermerhorn
2007-05-30 17:41 ` Christoph Lameter
2007-05-31 8:20 ` Michael Kerrisk
2007-05-31 14:49 ` Lee Schermerhorn
2007-05-31 15:56 ` Michael Kerrisk
2007-06-01 21:15 ` [PATCH] enhance memory policy sys call man pages v1 Lee Schermerhorn
2007-07-23 6:11 ` Michael Kerrisk
2007-07-23 6:32 ` mbind.2 man page patch Michael Kerrisk
2007-07-23 14:26 ` Lee Schermerhorn
2007-07-26 17:19 ` Michael Kerrisk
2007-07-26 18:06 ` Lee Schermerhorn
2007-07-26 18:18 ` Michael Kerrisk
2007-07-23 6:32 ` get_mempolicy.2 " Michael Kerrisk
2007-07-28 9:31 ` Michael Kerrisk
2007-08-09 18:43 ` Lee Schermerhorn
2007-08-09 20:57 ` Michael Kerrisk
2007-08-16 20:05 ` Andi Kleen
2007-08-18 5:50 ` Michael Kerrisk
2007-08-21 15:45 ` Lee Schermerhorn
2007-08-22 4:10 ` Michael Kerrisk
2007-08-22 16:08 ` [PATCH] Mempolicy Man Pages 2.64 1/3 - mbind.2 Lee Schermerhorn
2007-08-27 11:29 ` Michael Kerrisk
2007-08-22 16:10 ` [PATCH] Mempolicy Man Pages 2.64 2/3 - set_mempolicy.2 Lee Schermerhorn
2007-08-27 11:30 ` Michael Kerrisk
2007-08-22 16:12 ` [PATCH] Mempolicy Man Pages 2.64 3/3 - get_mempolicy.2 Lee Schermerhorn
2007-08-27 11:30 ` Michael Kerrisk
2007-08-27 10:46 ` get_mempolicy.2 man page patch Michael Kerrisk
2007-07-23 6:33 ` set_mempolicy.2 " Michael Kerrisk
2007-05-30 16:55 ` [PATCH] Document Linux Memory Policy Lee Schermerhorn
2007-05-30 17:56 ` Christoph Lameter
2007-05-31 6:18 ` Gleb Natapov
2007-05-31 6:41 ` Christoph Lameter
2007-05-31 6:47 ` Gleb Natapov
2007-05-31 6:56 ` Christoph Lameter
2007-05-31 7:11 ` Gleb Natapov
2007-05-31 7:24 ` Christoph Lameter
2007-05-31 7:39 ` Gleb Natapov
2007-05-31 17:43 ` Christoph Lameter
2007-05-31 17:07 ` Lee Schermerhorn
2007-05-31 10:43 ` Andi Kleen
2007-05-31 11:04 ` Gleb Natapov
2007-05-31 11:30 ` Gleb Natapov
2007-05-31 15:26 ` Lee Schermerhorn
2007-05-31 17:41 ` Gleb Natapov
2007-05-31 18:56 ` Lee Schermerhorn
2007-05-31 20:06 ` Gleb Natapov
2007-05-31 20:43 ` Andi Kleen
2007-06-01 9:38 ` Gleb Natapov
2007-06-01 10:21 ` Andi Kleen
2007-06-01 12:25 ` Gleb Natapov
2007-06-01 13:09 ` Andi Kleen
2007-06-01 17:15 ` Lee Schermerhorn
2007-06-01 18:43 ` Christoph Lameter
2007-06-01 19:38 ` Lee Schermerhorn
2007-06-01 19:48 ` Christoph Lameter
2007-06-01 21:05 ` Lee Schermerhorn
2007-06-01 21:56 ` Christoph Lameter
2007-06-04 13:46 ` Lee Schermerhorn
2007-06-04 16:34 ` Christoph Lameter
2007-06-04 17:02 ` Lee Schermerhorn
2007-06-04 17:11 ` Christoph Lameter
2007-06-04 20:23 ` Andi Kleen [this message]
2007-06-04 21:51 ` Christoph Lameter
2007-06-05 14:30 ` Lee Schermerhorn
2007-06-01 20:28 ` Gleb Natapov
2007-06-01 20:45 ` Christoph Lameter
2007-06-01 21:10 ` Lee Schermerhorn
2007-06-01 21:58 ` Christoph Lameter
2007-06-02 7:23 ` Gleb Natapov
2007-05-31 11:47 ` Andi Kleen
2007-05-31 11:59 ` Gleb Natapov
2007-05-31 12:15 ` Andi Kleen
2007-05-31 12:18 ` Gleb Natapov
2007-05-31 18:28 ` Lee Schermerhorn
2007-05-31 18:35 ` Christoph Lameter
2007-05-31 19:29 ` Lee Schermerhorn
2007-05-31 19:25 ` Paul Jackson
2007-05-31 20:22 ` Lee Schermerhorn
2007-05-29 20:07 ` Andi Kleen
2007-05-30 16:04 ` Lee Schermerhorn
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