From mboxrd@z Thu Jan 1 00:00:00 1970 From: "zyshao.maillist" Subject: Upgrage PV domU kernel? Date: Wed, 25 Mar 2009 08:58:44 +0800 Message-ID: <200903250858311253343@gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1605520025==" Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org This is a multi-part message in MIME format. --===============1605520025== Content-Type: multipart/alternative; boundary="=====003_Dragon653032357408_=====" This is a multi-part message in MIME format. --=====003_Dragon653032357408_===== Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: 7bit hi pals, I need to run some HPC applications on the PV Guest (configured with multiple VCPUs and the application invokes also multiple processes to communicate with each other during the lifetime), and found that in some overcommitted cases, the application's performance degrades drastically. I got a Xen installation with both Dom0 and DomU running "vmlinuz-2.6.18.8-xen" kernel, i.e., the default configuration. I am wondering if I can Upgrade the kernel of the PV Guest, i.e., domU, to run other alternative kernel, such as latest stable linux kernel, 2.6.28.8? By this way, it may be possible to avoid the performance sacrifice resulted by spin-lock problem. Thanks in advance for any suggestions! Zhiyuan Shao 2009-03-25 --=====003_Dragon653032357408_===== Content-Type: text/html; charset="gb2312" Content-Transfer-Encoding: 7bit

hi pals,

I need to run some HPC applications on the PV Guest (configured with multiple VCPUs and the application invokes also multiple processes to communicate with each other during the lifetime), and found that in some overcommitted cases, the application's performance degrades drastically. I got a Xen installation with both Dom0 and DomU running "vmlinuz-2.6.18.8-xen" kernel, i.e., the default configuration.

I am wondering if I can Upgrade the kernel of the PV Guest, i.e., domU, to run other alternative kernel, such as latest stable linux kernel, 2.6.28.8? By this way, it may be possible to avoid the performance sacrifice resulted by spin-lock problem.

Thanks in advance for any suggestions!

Zhiyuan Shao

2009-03-25

--=====003_Dragon653032357408_=====-- --===============1605520025== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel --===============1605520025==--