From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: Load increase after memory upgrade (part2)
Date: Wed, 25 Jan 2012 16:02:32 -0500
Message-ID: <20120125210232.GA29196@phenom.dumpdata.com>
References: <zarafa.4eed13dd.0c2e.0c908eda504bffd9@uhura.space.zz>
	<zarafa.4f2052a4.080f.57e9c5dc2a4ae722@uhura.space.zz>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xensource.com>
Content-Disposition: inline
In-Reply-To: <zarafa.4f2052a4.080f.57e9c5dc2a4ae722@uhura.space.zz>
List-Unsubscribe: <http://lists.xensource.com/mailman/options/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Carsten Schiers <carsten@schiers.de>
Cc: Konrad Rzeszutek Wilk <konrad@darnok.org>, xen-devel <xen-devel@lists.xensource.com>, Jan Beulich <JBeulich@suse.com>, Sander Eikelenboom <linux@eikelenboom.it>
List-Id: xen-devel@lists.xenproject.org

On Wed, Jan 25, 2012 at 08:06:12PM +0100, Carsten Schiers wrote:
> Some news: in order to prepare a clean setting, I upgraded to 3.2.1 kernel. I noticed that the load increase is
> reduced a bit, but noticably. It's only a simple test, running the DomU for 2 minutes, but the idle load is aprox.
> 
>   - 2.6.32 pvops		12-13%
>   - 3.2.1 pvops		10-11%

Yeah. I think this idue to the fix I added in xen-swiotlb to not always
do the bounce copying.

>   - 2.6.34 XenoLinux	7-8%
>