From: Christoph Lameter <cl@linux.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Tejun Heo <tj@kernel.org>, Lai Jiangshan <laijs@cn.fujitsu.com>,
Pekka Enberg <penberg@kernel.org>, Matt Mackall <mpm@selenic.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: Patch workqueue: create new slab cache instead of hacking
Date: Wed, 21 Mar 2012 10:03:07 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1203210959500.21932@router.home> (raw)
In-Reply-To: <1332341381.7893.17.camel@edumazet-glaptop>
On Wed, 21 Mar 2012, Eric Dumazet wrote:
> Creating a dedicated cache for few objects ? Thats a lot of overhead, at
> least for SLAB (no merges of caches)
Its some overhead for SLAB (a lot is what? If you tune down the per cpu
caches it should be a couple of pages) but its none for SLUB. Maybe we
need to add the merge logic to SLAB?
Or maybe we can extract a common higher handling level for kmem_cache
from all slab allocators and make merging standard.
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next prev parent reply other threads:[~2012-03-21 15:03 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-20 10:21 [RFC PATCH 0/6] add kmalloc_align() Lai Jiangshan
2012-03-20 10:21 ` [RFC PATCH 1/6] kenrel.h: add ALIGN_OF_LAST_BIT() Lai Jiangshan
2012-03-20 11:32 ` Michal Nazarewicz
2012-03-20 14:03 ` Alexey Dobriyan
2012-03-20 14:08 ` Christoph Lameter
2012-03-20 14:20 ` Peter Seebach
2012-03-20 10:21 ` [RFC PATCH 2/6] slub: add kmalloc_align() Lai Jiangshan
2012-03-20 14:14 ` Christoph Lameter
2012-03-20 14:21 ` Christoph Lameter
2012-03-20 10:21 ` [RFC PATCH 3/6] slab: " Lai Jiangshan
2012-03-20 10:21 ` [RFC PATCH 4/6] slob: don't couple the header size with the alignment Lai Jiangshan
2012-03-20 10:21 ` [RFC PATCH 5/6] slob: add kmalloc_align() Lai Jiangshan
2012-03-20 10:21 ` [RFC PATCH 6/6] workqueue: use kmalloc_align() instead of hacking Lai Jiangshan
2012-03-20 15:15 ` Christoph Lameter
2012-03-20 15:46 ` Tejun Heo
2012-03-21 3:02 ` Lai Jiangshan
2012-03-21 5:14 ` Tejun Heo
2012-03-21 14:12 ` Patch workqueue: create new slab cache " Christoph Lameter
2012-03-21 14:49 ` Eric Dumazet
2012-03-21 15:03 ` Christoph Lameter [this message]
2012-03-21 16:04 ` Eric Dumazet
2012-03-21 17:54 ` Christoph Lameter
2012-03-21 18:05 ` Eric Dumazet
2012-03-21 18:20 ` Christoph Lameter
2012-03-21 16:09 ` Tejun Heo
2012-03-21 17:56 ` Christoph Lameter
2012-03-21 13:45 ` [RFC PATCH 6/6] workqueue: use kmalloc_align() " Christoph Lameter
2012-03-26 2:00 ` Lai Jiangshan
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