DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=subject:from:to:cc:in-reply-to:references:content-type:date
         :message-id:mime-version:x-mailer:content-transfer-encoding;
        b=DQ/Mfs8L4+cZD/c+oNxV1ZFdL/eiHbv43QluVvGbH5OHSJndgI8b2y45cBbb6TE1KS
         NMxG8Ykod+58jav6wkvCfnSVNDCHFuf0obnL6E/0q6bC/ekVAtfY7OAZYXX9yoxghr6L
         lngqLq1gepaVyLuYvzMWHfLeF6wQ0nWkldLR4=
Subject: Re: hackbench regression due to commit 9dfc6e68bfe6e
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
       "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>,
       netdev <netdev@vger.kernel.org>, Tejun Heo <tj@kernel.org>,
       alex.shi@intel.com,
       "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
       "Ma, Ling" <ling.ma@intel.com>, "Chen, Tim C" <tim.c.chen@intel.com>,
       Andrew Morton <akpm@linux-foundation.org>
In-Reply-To: <alpine.DEB.2.00.1004071319320.16159@router.home>
References: <1269506457.4513.141.camel@alexs-hp.sh.intel.com>
	 <alpine.DEB.2.00.1003250942080.2670@router.home>
	 <1269570902.9614.92.camel@alexs-hp.sh.intel.com>
	 <1270114166.2078.107.camel@ymzhang.sh.intel.com>
	 <alpine.DEB.2.00.1004011050340.16531@router.home>
	 <1270195589.2078.116.camel@ymzhang.sh.intel.com>
	 <alpine.DEB.2.00.1004050853300.23149@router.home>
	 <i2z84144f021004051030k7ff5190cyc083aa12c552dfac@mail.gmail.com>
	 <4BBA8DF9.8010409@kernel.org>
	 <1270542497.2078.123.camel@ymzhang.sh.intel.com>
	 <alpine.DEB.2.00.1004061033330.18750@router.home>
	 <alpine.DEB.2.00.1004061552500.19151@router.home>
	 <1270591841.2091.170.camel@edumazet-laptop>
	 <1270607668.2078.259.camel@ymzhang.sh.intel.com>
	 <alpine.DEB.2.00.1004071130260.13261@router.home>
	 <4BBCB7B7.4040901@cs.helsinki.fi> <4BBCB868.2000705@cs.helsinki.fi>
	 <alpine.DEB.2.00.1004071319320.16159@router.home>
Content-Type: text/plain; charset="UTF-8"
Date: Wed, 07 Apr 2010 20:38:04 +0200
Message-ID: <1270665484.8141.47.camel@edumazet-laptop>
Mime-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 875
Lines: 24

Le mercredi 07 avril 2010 à 13:20 -0500, Christoph Lameter a écrit :
> On Wed, 7 Apr 2010, Pekka Enberg wrote:
> 
> > Oh, sorry, I think it's actually '____cacheline_aligned_in_smp' (with four
> > underscores) for per-cpu data. Confusing...
> 
> This does not particulary help to clarify the situation since we are
> dealing with data that can either be allocated via the percpu allocator or
> be statically present (kmalloc bootstrap situation).
> 
> --

Do we have a user program to check actual L1 cache size of a machine ?

I remember my HP blades have many BIOS options, I would like to make
sure they are properly set.


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/