From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Viau Subject: FW: [Xen-users] How to: Improve Network Throughput of a XEN kernel? Date: Fri, 26 Feb 2010 15:19:59 -0500 Message-ID: References: , <816703.71472.qm@web56105.mail.re3.yahoo.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2019661143==" Return-path: In-Reply-To: <816703.71472.qm@web56105.mail.re3.yahoo.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: bderzhavets@yahoo.com, jbeulich@novell.com Cc: xen-devel@lists.xensource.com, xen-users@lists.xensource.com List-Id: xen-devel@lists.xenproject.org --===============2019661143== Content-Type: multipart/alternative; boundary="_840268c1-7312-4667-870f-a983b48748a9_" --_840268c1-7312-4667-870f-a983b48748a9_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello again=2C Just a quick update... I was really hoping it was just going to be an issue with the kernel .confi= g=2C however I copied exact configuration from the working Debain 2.6.26-2-= xen-amd64 kernel and used a make oldconfig but the end result was the same. After booting the xenified (2.6.31.12) or pvops kernel (2.6.31.6) via both = xen-hypervisor 3.2.1 or xen-hypervisor 3.4.2 the maximum data transfer to/f= rom the Dom0 (Xen host) is ~1MB/s. Next I plan on re-trying my efforts on a Ubuntu system to see if same netwo= rk bottlenecking is present. =20 Date: Fri=2C 26 Feb 2010 09:16:59 -0800 From: bderzhavets@yahoo.com Subject: Re: [Xen-users] How to: Improve Network Throughput of a XEN kernel= ? To: xen-users@lists.xensource.com=3B viaum@sheridanc.on.ca Would escalate to xen-devel. 2.6.31.8 (12) aka Suse xenified was Jan Beul= ich stuff. He might have an answer. Boris. --- On Fri=2C 2/26/10=2C Mike Viau wrote: From: Mike Viau Subject: [Xen-users] How to: Improve Network Throughput of a XEN kernel? To: xen-users@lists.xensource.com Cc: waldi@debian.org Date: Friday=2C February 26=2C 2010=2C 12:09 PM Hi there=2C I am starting a new thread to try and solve a problem I am having will slow= network throughput to the XEN host (not to a domU). I have confirmed my problem occurs with PVOPS 'xen/master' kernel as well = using http://pasik.reaktio.net/xen/pv_ops-dom0-debug/config-2.6.31.6-pvops-= dom0-xen-master-x86_64 as the .config. It also occurs with a forward ported xenified kernel (2.6.31.12) using the = attached config-11-xen (.config). However when using the xen kernel found in debain lenny (2.6.26-2) for the = amd64 architecture I get similiar transfer rates to my Xen host as I do on = a baremetel kernel. Bastian Blank perhaps you could point me in the right direction in regards = to a debian specific customization or patch I should be aware of? Maxium transfer rate (to/from hard disk) using the PVOPS 'xen/master' kernel and forward ported xenifie= d kernel (2.6.31.12) is bottlenecking at ~1MB/s. On the debain lenny xen ke= rnel I am getting ~4.5MB/s. I was hoping one could suggest options in the .config that might be modified in order to improve network throughput of a XEN kernel and therefor increas= e the data transfer rates over the netowork to and from the Xen host. Thanks alot for any help! As always I will be willing to accept any suggest= ions :) -M =20 =20 _________________________________________________________________ --_840268c1-7312-4667-870f-a983b48748a9_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello again=2C

Just a quick update...

I was really hoping it = was just going to be an issue with the kernel .config=2C however I copied e= xact configuration from the working Debain 2.6.26-2-xen-amd64 kernel and us= ed a make oldconfig but the end result was the same.

After booting t= he xenified (2.6.31.12) or pvops kernel (2.6.31.6) via both xen-hypervisor = 3.2.1 or xen-hypervisor 3.4.2 the maximum data transfer to/from the Dom0 (X= en host) is ~1MB/s.

Next I plan on re-trying my efforts on a Ubuntu = system to see if same network bottlenecking is present.

=


Date: Fri=2C 26 Feb 2010 09:16:59 -0800
From: bderzhavets@ya= hoo.com
Subject: Re: [Xen-users] How to: Improve Network Throughput of a= XEN kernel?
To: xen-users@lists.xensource.com=3B viaum@sheridanc.on.ca<= br>
<= td style=3D"font-family: inherit=3B font-style: inherit=3B font-variant: in= herit=3B font-weight: inherit=3B font-size: inherit=3B line-height: inherit= =3B" valign=3D"top">Would escalate to xen-devel. =3B 2.6.31.8 (12) aka = Suse xenified =3B was Jan Beulich stuff.
He might have an answer.Boris.

--- On Fri=2C 2/26/10=2C Mike Viau <=3Bviaum@sherida= nc.on.ca>=3B wrote:

From: Mike Viau <=3Bviaum@sheridanc.on.ca>=3B<= br>Subject: [Xen-users] How to: Improve Network Throughput of a XEN kernel?=
To: xen-users@lists.xensource.com
Cc: waldi@debian.org
Date: Frid= ay=2C February 26=2C 2010=2C 12:09 PM

Hi there=2C

I am starting a new thread to try and solve a problem I = am having will slow network throughput to the XEN host (not to a domU).
=
I have confirmed my problem occurs with PVOPS 'xen/master' kernel as w= ell using http://pasik.reakti= o.net/xen/pv_ops-dom0-debug/config-2.6.31.6-pvops-dom0-xen-master-x86_64 as the .config.

It also occurs with a forward ported xenified kern= el (2.6.31.12) using the attached config-11-xen (.config).

How= ever when using the xen kernel found in debain lenny (2.6.26-2) for the amd= 64 architecture I get similiar transfer rates to my Xen host as I do on a b= aremetel kernel.

Bastian Blank perhaps you could point me in the rig= ht direction in regards to a debian specific customization or patch I shoul= d be aware of?

Maxium transfer rate (to/from hard disk) using the PVOPS 'xen/master' kernel and forward ported xenifie= d kernel (2.6.31.12) is bottlenecking at ~1MB/s. On the debain lenny = xen kernel I am getting ~4.5MB/s.

I was hoping one could suggest options in the .config that might be modified in order to improve network throughput of a XEN kernel and therefor increas= e the data transfer rates over the netowork to and from the Xen host.
Thanks alot for any help! As always I will be willing to accept any sugge= stions :)


-M

Not using Hotmail on your phone? Why not? Get it now. = --_840268c1-7312-4667-870f-a983b48748a9_-- --===============2019661143== 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 --===============2019661143==--