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Date: Mon, 18 Aug 2008 09:34:15 -0500
From: Christoph Lameter <cl@linux-foundation.org>
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To: Ray Lee <ray-lk@madrabbit.org>
CC: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>,
       =?UTF-8?B?SWxwbyBKw6Ry?= =?UTF-8?B?dmluZW4=?= 
	<ilpo.jarvinen@helsinki.fi>,
       David Miller <davem@davemloft.net>, Netdev <netdev@vger.kernel.org>,
       LKML <linux-kernel@vger.kernel.org>
Subject: Re: tbench regression on each kernel release from 2.6.22 -> 2.6.28
References: <48A086B6.2000901@linux-foundation.org>	 <20080811.141501.01468546.davem@davemloft.net>	 <Pine.LNX.4.64.0808121058550.4551@wrl-59.cs.helsinki.fi>	 <1219025114.25933.6.camel@ymzhang>	 <48A98228.9090006@linux-foundation.org> <2c0942db0808180731k7423df7ct75e3a27d404764d0@mail.gmail.com>
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Ray Lee wrote:
> On Mon, Aug 18, 2008 at 7:07 AM, Christoph Lameter
> <cl@linux-foundation.org> wrote:
>> Zhang, Yanmin wrote:
>>
>>> Other regressions on other machines are similar.
>> There are AIM7 regressions that are similar to tbench.
>>
>> 2.6.22  28436
>> 2.6.26  23064
> 
> Just a shot in the dark -- is this with Group Scheduling on or off?
> Off is prefered for benchmarks.

Off