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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Aruna Ramakrishna <aruna.ramakrishna@oracle.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Mike Kravetz <mike.kravetz@oracle.com>,
	Christoph Lameter <cl@linux.com>,
	Pekka Enberg <penberg@kernel.org>,
	David Rientjes <rientjes@google.com>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH v3] mm/slab: Improve performance of gathering slabinfo stats
Date: Wed, 17 Aug 2016 12:03:56 -0700	[thread overview]
Message-ID: <1471460636.29842.20.camel@edumazet-glaptop3.roam.corp.google.com> (raw)
In-Reply-To: <1471458050-29622-1-git-send-email-aruna.ramakrishna@oracle.com>

On Wed, 2016-08-17 at 11:20 -0700, Aruna Ramakrishna wrote:
]
> -		list_for_each_entry(page, &n->slabs_full, lru) {
> -			if (page->active != cachep->num && !error)
> -				error = "slabs_full accounting error";
> -			active_objs += cachep->num;
> -			active_slabs++;
> -		}

Since you only removed this loop, you could track only number of
full_slabs.

This would avoid messing with n->num_slabs all over the places in fast
path.

Please also update slab_out_of_memory()

  reply	other threads:[~2016-08-17 19:04 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-17 18:20 Aruna Ramakrishna
2016-08-17 19:03 ` Eric Dumazet [this message]
2016-08-17 19:25   ` Aruna Ramakrishna
2016-08-18 11:52 ` Michal Hocko
2016-08-19  5:47   ` aruna.ramakrishna
2016-08-23  2:13   ` Joonsoo Kim
2016-08-23 15:38     ` what is the purpose of SLAB and SLUB (was: Re: [PATCH v3] mm/slab: Improve performance of gathering slabinfo) stats Michal Hocko
2016-08-23 15:54       ` what is the purpose of SLAB and SLUB Andi Kleen
2016-08-25  4:10         ` Christoph Lameter
2016-08-25  7:32           ` Michal Hocko
2016-08-25 19:49             ` Christoph Lameter
2016-08-24  1:15       ` what is the purpose of SLAB and SLUB (was: Re: [PATCH v3] mm/slab: Improve performance of gathering slabinfo) stats Joonsoo Kim
2016-08-24  8:05         ` Michal Hocko
2016-08-24  8:20       ` Mel Gorman
2016-08-25  4:01         ` Christoph Lameter
2016-08-25 10:07           ` Mel Gorman
2016-08-25 19:55             ` Christoph Lameter
2016-08-26 20:47               ` what is the purpose of SLAB and SLUB Andi Kleen
2016-08-29 13:44                 ` Michal Hocko
2016-08-29 14:49                   ` Christoph Lameter
2016-08-30  9:39               ` what is the purpose of SLAB and SLUB (was: Re: [PATCH v3] mm/slab: Improve performance of gathering slabinfo) stats Mel Gorman
2016-08-30 19:32                 ` Christoph Lameter

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