From: Christoph Lameter <cl@linux.com>
To: "Alex,Shi" <alex.shi@intel.com>
Cc: "penberg@kernel.org" <penberg@kernel.org>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Andi Kleen <andi@firstfloor.org>
Subject: Re: [PATCH 2/2] slub: continue to seek slab in node partial if met a null page
Date: Thu, 8 Sep 2011 13:41:14 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1109081339360.14787@router.home> (raw)
In-Reply-To: <1315471083.31737.284.camel@debian>
On Thu, 8 Sep 2011, Alex,Shi wrote:
> > > If it happen, we'd better to skip the full page and to seek next slab in
> > > node partial instead of jump to other nodes.
> >
> > But I agree that the patch can be beneficial if acquire slab ever returns
> > a full page. That should not happen though. Is this theoretical or do you
> > have actual tests that show that this occurs?
>
> I didn't find a real case for this now. So, do you still like to pick up
> this as a defense for future more lockless usage?
I am at a conference and its a bit difficult to see the state of affairs
right now. Lets first defer it until I can see how this would otherwise
impact things.
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next prev parent reply other threads:[~2011-09-08 18:41 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1315188460.31737.5.camel@debian>
[not found] ` <alpine.DEB.2.00.1109061914440.18646@router.home>
2011-09-07 1:03 ` [PATCH] slub Discard slab page only when node partials > minimum setting Alex,Shi
2011-09-07 2:26 ` [PATCH] slub: code optimze in get_partial_node() Alex,Shi
2011-09-07 2:45 ` [PATCH 2/2] slub: continue to seek slab in node partial if met a null page Alex,Shi
2011-09-07 15:01 ` Christoph Lameter
2011-09-08 8:38 ` Alex,Shi
2011-09-08 18:41 ` Christoph Lameter [this message]
2011-09-07 2:56 ` [rfc ] slub: unfreeze full page if it's in node partial Alex,Shi
2011-09-07 3:06 ` Alex,Shi
2011-09-07 14:56 ` [PATCH] slub: code optimze in get_partial_node() Christoph Lameter
[not found] ` <alpine.DEB.2.00.1109062022100.20474@router.home>
[not found] ` <4E671E5C.7010405@cs.helsinki.fi>
[not found] ` <6E3BC7F7C9A4BF4286DD4C043110F30B5D00DA333C@shsmsx502.ccr.corp.intel.com>
[not found] ` <alpine.DEB.2.00.1109071003240.9406@router.home>
2011-09-08 0:43 ` [PATCH] slub Discard slab page only when node partials > minimum setting Alex,Shi
2011-09-08 1:34 ` Shaohua Li
2011-09-08 2:24 ` Alex,Shi
2011-09-15 5:40 ` Pekka Enberg
2011-09-15 6:03 ` Alex,Shi
2011-09-08 18:37 ` Christoph Lameter
2011-09-09 8:45 ` Alex,Shi
2011-09-11 11:41 ` Christoph Lameter
2011-09-13 8:29 ` Alex,Shi
2011-09-13 15:04 ` Christoph Lameter
2011-09-15 1:32 ` Alex,Shi
2011-09-15 1:51 ` Christoph Lameter
2011-09-15 2:00 ` Alex,Shi
[not found] ` <1316765880.4188.34.camel@debian>
[not found] ` <alpine.DEB.2.00.1109231500580.15559@router.home>
2011-09-29 9:53 ` Alex,Shi
2011-09-29 14:32 ` Christoph Lameter
2011-10-02 12:47 ` Shi, Alex
2011-10-03 15:21 ` Christoph Lameter
2011-10-09 6:28 ` Alex,Shi
2011-10-10 17:12 ` Christoph Lameter
2011-09-14 15:38 ` Christoph Lameter
2011-09-15 5:48 ` Pekka Enberg
2011-09-15 6:16 ` Alex,Shi
2011-09-07 3:14 ` [PATCH] slub: correct comments error for per cpu partial Alex,Shi
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