From: Glauber Costa <glommer@parallels.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: cgroups@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, devel@openvz.org,
Michal Hocko <mhocko@suse.cz>,
Johannes Weiner <hannes@cmpxchg.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Greg Thelen <gthelen@google.com>,
Suleiman Souhlal <suleiman@google.com>
Subject: Re: [PATCH 09/23] kmem slab accounting basic infrastructure
Date: Wed, 25 Apr 2012 11:38:57 -0300 [thread overview]
Message-ID: <4F980C81.5060802@parallels.com> (raw)
In-Reply-To: <4F975430.4090107@jp.fujitsu.com>
On 04/24/2012 10:32 PM, KAMEZAWA Hiroyuki wrote:
> (2012/04/21 6:57), Glauber Costa wrote:
>
>> This patch adds the basic infrastructure for the accounting of the slab
>> caches. To control that, the following files are created:
>>
>> * memory.kmem.usage_in_bytes
>> * memory.kmem.limit_in_bytes
>> * memory.kmem.failcnt
>> * memory.kmem.max_usage_in_bytes
>>
>> They have the same meaning of their user memory counterparts. They reflect
>> the state of the "kmem" res_counter.
>>
>> The code is not enabled until a limit is set. This can be tested by the flag
>> "kmem_accounted". This means that after the patch is applied, no behavioral
>> changes exists for whoever is still using memcg to control their memory usage.
>>
>
> Hmm, res_counter never goes naeative ?
Why would it?
This one has more or less the same logic as the sock buffers.
If we are not accounted, the caches don't get created. If the caches
don't get created, we don't release them. (this is modulo bugs, of course)
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next prev parent reply other threads:[~2012-04-25 14:40 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-20 21:57 [PATCH 00/23] slab+slub accounting for memcg Glauber Costa
2012-04-20 21:57 ` [PATCH 01/23] slub: don't create a copy of the name string in kmem_cache_create Glauber Costa
2012-04-20 21:57 ` [PATCH 02/23] slub: always get the cache from its page in kfree Glauber Costa
2012-04-20 21:57 ` [PATCH 03/23] slab: rename gfpflags to allocflags Glauber Costa
2012-04-20 21:57 ` [PATCH 04/23] memcg: Make it possible to use the stock for more than one page Glauber Costa
2012-04-25 0:59 ` KAMEZAWA Hiroyuki
2012-04-20 21:57 ` [PATCH 05/23] memcg: Reclaim when more than one page needed Glauber Costa
2012-04-25 1:16 ` KAMEZAWA Hiroyuki
2012-04-20 21:57 ` [PATCH 06/23] slab: use obj_size field of struct kmem_cache when not debugging Glauber Costa
2012-04-20 21:57 ` [PATCH 07/23] change defines to an enum Glauber Costa
2012-04-25 1:18 ` KAMEZAWA Hiroyuki
2012-04-20 21:57 ` [PATCH 08/23] don't force return value checking in res_counter_charge_nofail Glauber Costa
2012-04-25 1:28 ` KAMEZAWA Hiroyuki
2012-04-20 21:57 ` [PATCH 09/23] kmem slab accounting basic infrastructure Glauber Costa
2012-04-25 1:32 ` KAMEZAWA Hiroyuki
2012-04-25 14:38 ` Glauber Costa [this message]
2012-04-26 0:08 ` KAMEZAWA Hiroyuki
2012-04-30 19:33 ` Suleiman Souhlal
2012-05-02 15:15 ` Glauber Costa
2012-04-20 21:57 ` [PATCH 10/23] slab/slub: struct memcg_params Glauber Costa
2012-04-30 19:42 ` Suleiman Souhlal
2012-04-20 21:57 ` [PATCH 11/23] slub: consider a memcg parameter in kmem_create_cache Glauber Costa
2012-04-24 14:03 ` Frederic Weisbecker
2012-04-24 14:27 ` Glauber Costa
2012-04-25 1:38 ` KAMEZAWA Hiroyuki
2012-04-25 14:37 ` Glauber Costa
2012-04-30 19:51 ` Suleiman Souhlal
2012-05-02 15:18 ` Glauber Costa
2012-04-22 23:53 ` [PATCH 12/23] slab: pass memcg parameter to kmem_cache_create Glauber Costa
2012-04-30 19:54 ` Suleiman Souhlal
2012-04-22 23:53 ` [PATCH 13/23] slub: create duplicate cache Glauber Costa
2012-04-24 14:18 ` Frederic Weisbecker
2012-04-24 14:37 ` Glauber Costa
2012-04-26 13:10 ` Frederic Weisbecker
2012-04-30 20:15 ` Suleiman Souhlal
2012-04-22 23:53 ` [PATCH 14/23] slub: provide kmalloc_no_account Glauber Costa
2012-04-22 23:53 ` [PATCH 15/23] slab: create duplicate cache Glauber Costa
2012-04-22 23:53 ` [PATCH 16/23] slab: provide kmalloc_no_account Glauber Costa
2012-04-25 1:44 ` KAMEZAWA Hiroyuki
2012-04-25 14:29 ` Glauber Costa
2012-04-26 0:13 ` KAMEZAWA Hiroyuki
2012-04-22 23:53 ` [PATCH 17/23] kmem controller charge/uncharge infrastructure Glauber Costa
2012-04-23 22:25 ` David Rientjes
2012-04-24 14:22 ` Frederic Weisbecker
2012-04-24 14:40 ` Glauber Costa
2012-04-24 20:25 ` David Rientjes
2012-04-24 21:36 ` Glauber Costa
2012-04-24 22:54 ` David Rientjes
2012-04-25 14:43 ` Glauber Costa
2012-04-24 20:21 ` David Rientjes
2012-04-27 11:38 ` Frederic Weisbecker
2012-04-27 18:13 ` David Rientjes
2012-04-25 1:56 ` KAMEZAWA Hiroyuki
2012-04-25 14:44 ` Glauber Costa
2012-04-27 12:22 ` Frederic Weisbecker
2012-04-30 20:56 ` Suleiman Souhlal
2012-05-02 15:34 ` Glauber Costa
2012-04-22 23:53 ` [PATCH 18/23] slub: charge allocation to a memcg Glauber Costa
2012-04-22 23:53 ` [PATCH 19/23] slab: per-memcg accounting of slab caches Glauber Costa
2012-04-30 21:25 ` Suleiman Souhlal
2012-05-02 15:40 ` Glauber Costa
2012-04-22 23:53 ` [PATCH 20/23] memcg: disable kmem code when not in use Glauber Costa
2012-04-22 23:53 ` [PATCH 21/23] memcg: Track all the memcg children of a kmem_cache Glauber Costa
2012-04-22 23:53 ` [PATCH 22/23] memcg: Per-memcg memory.kmem.slabinfo file Glauber Costa
2012-04-22 23:53 ` [PATCH 23/23] slub: create slabinfo file for memcg Glauber Costa
2012-04-22 23:59 ` [PATCH 00/23] slab+slub accounting " Glauber Costa
2012-04-30 9:59 ` [PATCH 0/3] A few fixes for '[PATCH 00/23] slab+slub accounting for memcg' series Anton Vorontsov
2012-04-30 10:01 ` [PATCH 1/3] slab: Proper off-slabs handling when duplicating caches Anton Vorontsov
2012-04-30 10:01 ` [PATCH 2/3] slab: Fix imbalanced rcu locking Anton Vorontsov
2012-04-30 10:02 ` [PATCH 3/3] slab: Get rid of mem_cgroup_put_kmem_cache() Anton Vorontsov
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