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Date: Fri, 20 Apr 2007 12:26:31 -0700
From: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: William Lee Irwin III <wli@holomorphy.com>, Ingo Molnar <mingo@elte.hu>,
       linux-kernel@vger.kernel.org,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       Con Kolivas <kernel@kolivas.org>, Nick Piggin <npiggin@suse.de>,
       Mike Galbraith <efault@gmx.de>, Arjan van de Ven <arjan@infradead.org>,
       Peter Williams <pwil3058@bigpond.net.au>,
       Thomas Gleixner <tglx@linutronix.de>, caglar@pardus.org.tr,
       Willy Tarreau <w@1wt.eu>, Gene Heskett <gene.heskett@gmail.com>
Subject: Re: [patch] CFS scheduler, v3
Message-ID: <20070420192630.GB5475@linux-os.sc.intel.com>
References: <20070418175017.GA5250@elte.hu> <20070418212645.GU2986@holomorphy.com> <Pine.LNX.4.64.0704201223280.21417@schroedinger.engr.sgi.com>
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On Fri, Apr 20, 2007 at 12:24:17PM -0700, Christoph Lameter wrote:
> On Wed, 18 Apr 2007, William Lee Irwin III wrote:
> 
> > 
> > Mark the runqueues ____cacheline_aligned_in_smp to avoid false sharing.
> 
> False sharing for a per cpu data structure? Are we updating that 
> structure from other processors?

yes. during a remote process wakeup.