From: Pekka Enberg <penberg@iki.fi>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Pekka Enberg <penberg@kernel.org>,
Christoph Lameter <cl@linux.com>, Joonsoo Kim <js1304@gmail.com>,
David Rientjes <rientjes@google.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Wanpeng Li <liwanp@linux.vnet.ibm.com>
Subject: Re: [PATCH v2 00/15] slab: overload struct slab over struct page to reduce memory usage
Date: Thu, 17 Oct 2013 09:20:04 +0200 [thread overview]
Message-ID: <525F8FA4.3000702@iki.fi> (raw)
In-Reply-To: <20131016133457.60fa71f893cd2962d8ec6ff3@linux-foundation.org>
On 10/16/13 10:34 PM, Andrew Morton wrote:
> On Wed, 16 Oct 2013 17:43:57 +0900 Joonsoo Kim <iamjoonsoo.kim@lge.com> wrote:
>
>> There is two main topics in this patchset. One is to reduce memory usage
>> and the other is to change a management method of free objects of a slab.
>>
>> The SLAB allocate a struct slab for each slab. The size of this structure
>> except bufctl array is 40 bytes on 64 bits machine. We can reduce memory
>> waste and cache footprint if we overload struct slab over struct page.
> Seems a good idea from a quick look.
Indeed.
Christoph, I'd like to pick this up and queue for linux-next. Any
objections or comments to the patches?
Pekka
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WARNING: multiple messages have this Message-ID (diff)
From: Pekka Enberg <penberg@iki.fi>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Pekka Enberg <penberg@kernel.org>,
Christoph Lameter <cl@linux.com>, Joonsoo Kim <js1304@gmail.com>,
David Rientjes <rientjes@google.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Wanpeng Li <liwanp@linux.vnet.ibm.com>
Subject: Re: [PATCH v2 00/15] slab: overload struct slab over struct page to reduce memory usage
Date: Thu, 17 Oct 2013 09:20:04 +0200 [thread overview]
Message-ID: <525F8FA4.3000702@iki.fi> (raw)
In-Reply-To: <20131016133457.60fa71f893cd2962d8ec6ff3@linux-foundation.org>
On 10/16/13 10:34 PM, Andrew Morton wrote:
> On Wed, 16 Oct 2013 17:43:57 +0900 Joonsoo Kim <iamjoonsoo.kim@lge.com> wrote:
>
>> There is two main topics in this patchset. One is to reduce memory usage
>> and the other is to change a management method of free objects of a slab.
>>
>> The SLAB allocate a struct slab for each slab. The size of this structure
>> except bufctl array is 40 bytes on 64 bits machine. We can reduce memory
>> waste and cache footprint if we overload struct slab over struct page.
> Seems a good idea from a quick look.
Indeed.
Christoph, I'd like to pick this up and queue for linux-next. Any
objections or comments to the patches?
Pekka
next prev parent reply other threads:[~2013-10-17 7:20 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-16 8:43 [PATCH v2 00/15] slab: overload struct slab over struct page to reduce memory usage Joonsoo Kim
2013-10-16 8:43 ` Joonsoo Kim
2013-10-16 8:43 ` [PATCH v2 01/15] slab: correct pfmemalloc check Joonsoo Kim
2013-10-16 8:43 ` Joonsoo Kim
2013-10-16 15:27 ` Christoph Lameter
2013-10-16 15:27 ` Christoph Lameter
2013-10-17 5:27 ` Joonsoo Kim
2013-10-17 5:27 ` Joonsoo Kim
2013-10-16 8:43 ` [PATCH v2 02/15] slab: change return type of kmem_getpages() to struct page Joonsoo Kim
2013-10-16 8:43 ` Joonsoo Kim
2013-10-16 8:44 ` [PATCH v2 03/15] slab: remove colouroff in struct slab Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-16 8:44 ` [PATCH v2 04/15] slab: remove nodeid " Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-17 19:05 ` Christoph Lameter
2013-10-17 19:05 ` Christoph Lameter
2013-10-16 8:44 ` [PATCH v2 05/15] slab: remove cachep in struct slab_rcu Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-16 8:44 ` [PATCH v2 06/15] slab: overloading the RCU head over the LRU for RCU free Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-16 8:44 ` [PATCH v2 07/15] slab: use well-defined macro, virt_to_slab() Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-16 8:44 ` [PATCH v2 08/15] slab: use __GFP_COMP flag for allocating slab pages Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-17 19:08 ` Christoph Lameter
2013-10-17 19:08 ` Christoph Lameter
2013-10-18 15:13 ` JoonSoo Kim
2013-10-18 15:13 ` JoonSoo Kim
2013-10-16 8:44 ` [PATCH v2 09/15] slab: change the management method of free objects of the slab Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-16 8:44 ` [PATCH v2 10/15] slab: remove kmem_bufctl_t Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-16 8:44 ` [PATCH v2 11/15] slab: remove SLAB_LIMIT Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-17 19:09 ` Christoph Lameter
2013-10-17 19:09 ` Christoph Lameter
2013-10-16 8:44 ` [PATCH v2 12/15] slab: replace free and inuse in struct slab with newly introduced active Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-16 8:44 ` [PATCH v2 13/15] slab: use struct page for slab management Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-17 19:13 ` Christoph Lameter
2013-10-17 19:13 ` Christoph Lameter
2013-10-18 15:05 ` JoonSoo Kim
2013-10-18 15:05 ` JoonSoo Kim
2013-10-20 18:05 ` Christoph Lameter
2013-10-20 18:05 ` Christoph Lameter
2013-10-30 8:28 ` Joonsoo Kim
2013-10-30 8:28 ` Joonsoo Kim
2013-10-30 8:42 ` Pekka Enberg
2013-10-30 8:42 ` Pekka Enberg
2013-10-30 10:06 ` Joonsoo Kim
2013-10-30 10:06 ` Joonsoo Kim
2013-10-16 8:44 ` [PATCH v2 14/15] slab: remove useless statement for checking pfmemalloc Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-16 8:44 ` [PATCH v2 15/15] slab: rename slab_bufctl to slab_freelist Joonsoo Kim
2013-10-16 8:44 ` Joonsoo Kim
2013-10-16 20:34 ` [PATCH v2 00/15] slab: overload struct slab over struct page to reduce memory usage Andrew Morton
2013-10-16 20:34 ` Andrew Morton
2013-10-17 6:01 ` Joonsoo Kim
2013-10-17 6:01 ` Joonsoo Kim
2013-10-17 7:20 ` Pekka Enberg [this message]
2013-10-17 7:20 ` Pekka Enberg
2013-10-17 18:02 ` Christoph Lameter
2013-10-17 18:02 ` Christoph Lameter
2013-10-17 19:15 ` Christoph Lameter
2013-10-17 19:15 ` Christoph Lameter
2013-10-19 22:39 ` Andi Kleen
2013-10-19 22:39 ` Andi Kleen
2013-10-19 22:41 ` Andi Kleen
2013-10-19 22:41 ` Andi Kleen
2013-10-30 10:04 ` [PATCH v2 16/15] slab: fix to calm down kmemleak warning Joonsoo Kim
2013-10-30 10:04 ` Joonsoo Kim
2013-10-30 10:04 ` [PATCH v2 17/15] slab: replace non-existing 'struct freelist *' with 'void *' Joonsoo Kim
2013-10-30 10:04 ` Joonsoo Kim
2013-11-01 19:09 ` Christoph Lameter
2013-11-01 19:09 ` Christoph Lameter
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