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Subject: Re: [RFC][PATCH 6/8] mm: handle_speculative_fault()
From: Andi Kleen <andi@firstfloor.org>
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Date: Fri, 08 Jan 2010 19:46:20 +0100
In-Reply-To: <alpine.DEB.2.00.1001081138260.23727@router.home> (Christoph Lameter's message of "Fri, 8 Jan 2010 11:43:41 -0600 (CST)")
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To: Christoph Lameter <cl@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>, Peter Zijlstra <peterz@infradead.org>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>, Minchan Kim <minchan.kim@gmail.com>, "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "linux-mm@kvack.org" <linux-mm@kvack.org>, "hugh.dickins" <hugh.dickins@tiscali.co.uk>, Nick Piggin <nickpiggin@yahoo.com.au>, Ingo Molnar <mingo@elte.hu>
List-ID: <linux-mm.kvack.org>

Christoph Lameter <cl@linux-foundation.org> writes:

> Can we at least consider a typical standard business server, dual quad
> core hyperthreaded with 16 "cpus"? Cacheline contention will increase
> significantly there.

This year's standard server will be more like 24-64 "cpus"

Cheating with locks usually doesn't work anymore at these sizes.

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only.

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