From: Christoph Lameter <cl@gentwo.org>
To: "Shi, Alex" <alex.shi@intel.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"Chen, Tim C" <tim.c.chen@intel.com>,
"Huang, Ying" <ying.huang@intel.com>
Subject: RE: [PATCH] slub: remove a minus instruction in get_partial_node
Date: Mon, 3 Oct 2011 08:55:29 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1110030854270.9611@router.home> (raw)
In-Reply-To: <6E3BC7F7C9A4BF4286DD4C043110F30B5FD97584A4@shsmsx502.ccr.corp.intel.com>
On Sun, 2 Oct 2011, Shi, Alex wrote:
> > A slab on the partial lists always has objects available. Why would it be
> > zero?
>
> Um, my mistaken. The reason should be: if code is here, the slab will be per cpu slab.
> It is no chance to be in per cpu partial and no relationship with per cpu partial. So
> no reason to use this value as a criteria for filling per cpu partial.
I am not sure I understand you. The point of the code is to count the
objects available in the per cpu partial pages so that we can limit the
number of pages we fetch from the per node partial list.
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next prev parent reply other threads:[~2011-10-03 13:55 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-29 10:05 [PATCH] slub: remove a minus instruction in get_partial_node Alex,Shi
2011-09-29 14:18 ` Christoph Lameter
2011-10-02 12:55 ` Shi, Alex
2011-10-03 13:55 ` Christoph Lameter [this message]
2011-10-08 2:48 ` Alex,Shi
2011-10-10 17:11 ` Christoph Lameter
2011-10-11 9:50 ` Alex,Shi
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