linux-kernel - Re: [RFC PATCH 1/5] mm, page_alloc: support multiple pages allocation

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Message-ID: <20130716002652.GA2430@lge.com>
Date:	Tue, 16 Jul 2013 09:26:52 +0900
From:	Joonsoo Kim <iamjoonsoo.kim@....com>
To:	Dave Hansen <dave.hansen@...el.com>
Cc:	Dave Hansen <dave@...1.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>,
	David Rientjes <rientjes@...gle.com>,
	Glauber Costa <glommer@...il.com>,
	Johannes Weiner <hannes@...xchg.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Rik van Riel <riel@...hat.com>,
	Hugh Dickins <hughd@...gle.com>,
	Minchan Kim <minchan@...nel.org>,
	Jiang Liu <jiang.liu@...wei.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 1/5] mm, page_alloc: support multiple pages allocation

On Thu, Jul 11, 2013 at 08:51:22AM -0700, Dave Hansen wrote:
> On 07/10/2013 11:12 PM, Joonsoo Kim wrote:
> >> > I'd also like to see some scalability numbers on this.  How do your
> >> > tests look when all the CPUs on the system are hammering away?
> > What test do you mean?
> > Please elaborate on this more
> 
> Your existing tests looked single-threaded.  That's certainly part of
> the problem.  Will your patches have implications for larger systems,
> though?  How much do your patches speed up or slow things down if we
> have many allocations proceeding on many CPUs in parallel?

Hello.

Okay, I will do that and attach the result to v2.

Thanks.

> 
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