WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-users

Re: [Xen-users] Dom0 vs native performance: does it look right?

To: Stefan de Konink <stefan@xxxxxxxxx>
Subject: Re: [Xen-users] Dom0 vs native performance: does it look right?
From: Ravikesh Chandra <rcha108@xxxxxxxxxxxxxxxxx>
Date: Mon, 13 Apr 2009 10:51:11 +1200
Cc: "xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Sun, 12 Apr 2009 15:51:52 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <49E26E0C.5000408@xxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <94e5c5c20904121508j508fce82we624b709964c3b62@xxxxxxxxxxxxxx> <49E26E0C.5000408@xxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
Hi Stefan,

Thanks for your reply. However could you please elaborate further on
your statement?

I have the file
"/etc/ld.so.conf.d/kernelcap-2.6.18-128.1.6.el5xen.conf" which
contains "hwcap 0 nosegneg".. is that what you mean? I am running a
64-bit installation btw.

Thanks in advance.


2009/4/13 Stefan de Konink <stefan@xxxxxxxxx>:
> Ravikesh Chandra wrote:
>>
>> Hi folks,
>>
>> Firstly I am running CentOS 5.3 with Xen 3.3.1 (gitco) and I've just
>> been testing the performance with the Unixbench test. What I found is
>> that running the test on the Dom0 (under Xen kernel) resulted in only
>> 50% performance of native! I appreciate there is always going to be
>> overheads with virtualisation but I just wanted to check with the list
>> if these numbers were expected? If that doesn't seem normal any
>> suggestions on what I could look at?
>
> no tls cflag is a start.
>
>
> Stefan
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users