From: Phillip Susi <psusi@ubuntu.com>
To: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Simon Jeons <simon.jeons@gmail.com>,
akpm@linux-foundation.org, mgorman@suse.de,
matthew.garrett@nebula.com, dave@sr71.net, rientjes@google.com,
riel@redhat.com, arjan@linux.intel.com,
srinivas.pandruvada@linux.intel.com,
maxime.coquelin@stericsson.com, loic.pallardy@stericsson.com,
kamezawa.hiroyu@jp.fujitsu.com, lenb@kernel.org, rjw@sisk.pl,
gargankita@gmail.com, paulmck@linux.vnet.ibm.com,
amit.kachhap@linaro.org, svaidy@linux.vnet.ibm.com,
andi@firstfloor.org, wujianguo@huawei.com, kmpark@infradead.org,
thomas.abraham@linaro.org, santosh.shilimkar@ti.com,
linux-pm@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v2 00/15][Sorted-buddy] mm: Memory Power Management
Date: Tue, 28 May 2013 16:08:36 -0400 [thread overview]
Message-ID: <51A50EC4.4090108@ubuntu.com> (raw)
In-Reply-To: <5170EE4F.9030908@linux.vnet.ibm.com>
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Hash: SHA1
On 4/19/2013 3:12 AM, Srivatsa S. Bhat wrote:
> But going further, as I had mentioned in my TODO list, we can be
> smarter than this while doing compaction to evacuate memory regions
> - we can choose to migrate only the active pages, and leave the
> inactive pages alone. Because, the goal is to actually consolidate
> the *references* and not necessarily the *allocations* themselves.
That would help with keeping references compact to allow use of the
low power states, but it would also be nice to keep allocations
compact, and completely power off a bank of ram with no allocations.
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WARNING: multiple messages have this Message-ID (diff)
From: Phillip Susi <psusi@ubuntu.com>
To: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Simon Jeons <simon.jeons@gmail.com>,
akpm@linux-foundation.org, mgorman@suse.de,
matthew.garrett@nebula.com, dave@sr71.net, rientjes@google.com,
riel@redhat.com, arjan@linux.intel.com,
srinivas.pandruvada@linux.intel.com,
maxime.coquelin@stericsson.com, loic.pallardy@stericsson.com,
kamezawa.hiroyu@jp.fujitsu.com, lenb@kernel.org, rjw@sisk.pl,
gargankita@gmail.com, paulmck@linux.vnet.ibm.com,
amit.kachhap@linaro.org, svaidy@linux.vnet.ibm.com,
andi@firstfloor.org, wujianguo@huawei.com, kmpark@infradead.org,
thomas.abraham@linaro.org, santosh.shilimkar@ti.com,
linux-pm@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v2 00/15][Sorted-buddy] mm: Memory Power Management
Date: Tue, 28 May 2013 16:08:36 -0400 [thread overview]
Message-ID: <51A50EC4.4090108@ubuntu.com> (raw)
In-Reply-To: <5170EE4F.9030908@linux.vnet.ibm.com>
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 4/19/2013 3:12 AM, Srivatsa S. Bhat wrote:
> But going further, as I had mentioned in my TODO list, we can be
> smarter than this while doing compaction to evacuate memory regions
> - we can choose to migrate only the active pages, and leave the
> inactive pages alone. Because, the goal is to actually consolidate
> the *references* and not necessarily the *allocations* themselves.
That would help with keeping references compact to allow use of the
low power states, but it would also be nice to keep allocations
compact, and completely power off a bank of ram with no allocations.
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next prev parent reply other threads:[~2013-05-28 20:08 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-09 21:45 [RFC PATCH v2 00/15][Sorted-buddy] mm: Memory Power Management Srivatsa S. Bhat
2013-04-09 21:45 ` Srivatsa S. Bhat
2013-04-09 21:45 ` [RFC PATCH v2 01/15] mm: Introduce memory regions data-structure to capture region boundaries within nodes Srivatsa S. Bhat
2013-04-09 21:45 ` Srivatsa S. Bhat
2013-04-09 21:46 ` [RFC PATCH v2 02/15] mm: Initialize node memory regions during boot Srivatsa S. Bhat
2013-04-09 21:46 ` Srivatsa S. Bhat
2013-04-09 21:46 ` [RFC PATCH v2 03/15] mm: Introduce and initialize zone memory regions Srivatsa S. Bhat
2013-04-09 21:46 ` Srivatsa S. Bhat
2013-04-09 21:46 ` [RFC PATCH v2 04/15] mm: Add helpers to retrieve node region and zone region for a given page Srivatsa S. Bhat
2013-04-09 21:46 ` Srivatsa S. Bhat
2013-04-09 21:46 ` [RFC PATCH v2 05/15] mm: Add data-structures to describe memory regions within the zones' freelists Srivatsa S. Bhat
2013-04-09 21:46 ` Srivatsa S. Bhat
2013-04-09 21:47 ` [RFC PATCH v2 06/15] mm: Demarcate and maintain pageblocks in region-order in " Srivatsa S. Bhat
2013-04-09 21:47 ` Srivatsa S. Bhat
2013-04-09 21:47 ` [RFC PATCH v2 07/15] mm: Add an optimized version of del_from_freelist to keep page allocation fast Srivatsa S. Bhat
2013-04-09 21:47 ` Srivatsa S. Bhat
2013-04-09 21:47 ` [RFC PATCH v2 08/15] bitops: Document the difference in indexing between fls() and __fls() Srivatsa S. Bhat
2013-04-09 21:47 ` Srivatsa S. Bhat
2013-04-09 21:47 ` [RFC PATCH v2 09/15] mm: A new optimized O(log n) sorting algo to speed up buddy-sorting Srivatsa S. Bhat
2013-04-09 21:47 ` Srivatsa S. Bhat
2013-04-09 21:47 ` [RFC PATCH v2 10/15] mm: Add support to accurately track per-memory-region allocation Srivatsa S. Bhat
2013-04-09 21:47 ` Srivatsa S. Bhat
2013-04-09 21:48 ` [RFC PATCH v2 11/15] mm: Restructure the compaction part of CMA for wider use Srivatsa S. Bhat
2013-04-09 21:48 ` Srivatsa S. Bhat
2013-04-09 21:48 ` [RFC PATCH v2 12/15] mm: Add infrastructure to evacuate memory regions using compaction Srivatsa S. Bhat
2013-04-09 21:48 ` Srivatsa S. Bhat
2013-04-09 21:48 ` [RFC PATCH v2 13/15] mm: Implement the worker function for memory region compaction Srivatsa S. Bhat
2013-04-09 21:48 ` Srivatsa S. Bhat
2013-04-09 21:48 ` [RFC PATCH v2 14/15] mm: Add alloc-free handshake to trigger " Srivatsa S. Bhat
2013-04-09 21:48 ` Srivatsa S. Bhat
2013-04-10 23:26 ` Cody P Schafer
2013-04-10 23:26 ` Cody P Schafer
2013-04-16 13:49 ` Srivatsa S. Bhat
2013-04-16 13:49 ` Srivatsa S. Bhat
2013-04-09 21:49 ` [RFC PATCH v2 15/15] mm: Print memory region statistics to understand the buddy allocator behavior Srivatsa S. Bhat
2013-04-09 21:49 ` Srivatsa S. Bhat
2013-04-17 16:53 ` [RFC PATCH v2 00/15][Sorted-buddy] mm: Memory Power Management Srinivas Pandruvada
2013-04-17 16:53 ` Srinivas Pandruvada
2013-04-18 9:54 ` Srivatsa S. Bhat
2013-04-18 9:54 ` Srivatsa S. Bhat
2013-04-18 15:13 ` Srinivas Pandruvada
2013-04-18 15:13 ` Srinivas Pandruvada
2013-04-19 8:11 ` Srivatsa S. Bhat
2013-04-19 8:11 ` Srivatsa S. Bhat
2013-04-18 17:10 ` Dave Hansen
2013-04-18 17:10 ` Dave Hansen
2013-04-19 6:50 ` Srivatsa S. Bhat
2013-04-19 6:50 ` Srivatsa S. Bhat
2013-04-25 17:57 ` Srivatsa S. Bhat
2013-04-25 17:57 ` Srivatsa S. Bhat
2013-04-19 5:34 ` Simon Jeons
2013-04-19 5:34 ` Simon Jeons
2013-04-19 7:12 ` Srivatsa S. Bhat
2013-04-19 7:12 ` Srivatsa S. Bhat
2013-04-19 15:26 ` Srinivas Pandruvada
2013-04-19 15:26 ` Srinivas Pandruvada
2013-05-28 20:08 ` Phillip Susi [this message]
2013-05-28 20:08 ` Phillip Susi
2013-05-29 5:36 ` Srivatsa S. Bhat
2013-05-29 5:36 ` Srivatsa S. Bhat
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