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-devel

Re: [Xen-devel] Video Presentation on PCI Express x16 VGA Pass Through

To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Subject: Re: [Xen-devel] Video Presentation on PCI Express x16 VGA Pass Through to Xen-based Windows XP Home Edition HVM Virtual Machine
From: "Mr. Teo En Ming (Zhang Enming)" <space.time.universe@xxxxxxxxx>
Date: Thu, 8 Oct 2009 22:13:48 +0800
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, space.time.universe@xxxxxxxxx
Delivery-date: Thu, 08 Oct 2009 07:14:21 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=sLc5PXxL/6DPj3goOOBm8Bavp5dYl1sNL0NVPIMVxbU=; b=S2ejgVeFjMUT2QsD8SdUYdnyy996qRYZ4+caq/E3MMeT07gkSQLxQIKvd16UTl5PXV fruDd98x65DFxtDy1IKNgjpP8tN6Avs3e2uJ+mA/sAFOXgyzkjtvaEuyRT8X4ems2+rj wf7tevbbkTVpoU1v7lEIke0+hrFhoShVS1Y9Q=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=Ir0ZSTCMtVKrBGIxbA6w7hFdbhVruATwDAhC7lV13ZgSeUbpqpRvxKqOKlwswnc1YB oJcloAZ5QwoIhobq+bdlhTrZUkVZgpXkmjPcTu/Wvjlh+s7F961GlNRnEnvJQ8Kk5GBo suHgGH9b02Cn+s7dUrllW7QshbNNKIaSvSIpo=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20091008135952.GA29004@xxxxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <f712b9cf0909100528x5c138bfbteeb35f43fc219d7b@xxxxxxxxxxxxxx> <4AA942BC.6080404@xxxxxxxx> <f712b9cf0909101719offcfe89o5c938983bcd1d0c5@xxxxxxxxxxxxxx> <f712b9cf0909110837j573c6d99pe650219bad625f05@xxxxxxxxxxxxxx> <20090911160319.GJ31123@xxxxxxxxxxx> <f712b9cf0909111952l538dc146m3cb0934402de2501@xxxxxxxxxxxxxx> <4AB025E4.1000303@xxxxxxxx> <f712b9cf0910080636o77bdb91bs8af1f8d94b24ee39@xxxxxxxxxxxxxx> <f712b9cf0910080648l1946047cneee2308772e2e3c5@xxxxxxxxxxxxxx> <20091008135952.GA29004@xxxxxxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Dear Konrad,

Please refer to my replies under your questions below.

Thank you.

--
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering)
Alma Maters:
(1) Singapore Polytechnic
(2) National University of Singapore
Blog URL: http://teo-en-ming-aka-zhang-enming.blogspot.com
Email: space.time.universe@xxxxxxxxx
MSN: teoenming@xxxxxxxxxxx
Mobile Phone: +65-9648-9798
Street: Bedok Reservoir Road
Republic of Singapore

On Thu, Oct 8, 2009 at 9:59 PM, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
On Thu, Oct 08, 2009 at 09:48:20PM +0800, Mr. Teo En Ming (Zhang Enming) wrote:
> Attached in this email are three JPEG screenshots showing disk I/O benchmark
> results for pvops dom0 kernels 2.6.30-rc3, 2.6.31-rc6, and 2.6.31.1.

Did you change the build-id of Xen between the tests? Meaning did you
check out a newer one between the releases?

No. I did not change the changesets of xen between the tests.
 

What is your underlaying disk for your guest?

I am not using a disk image file. I am using LVM2 logical volume for my Win XP Home guest.


Did you flush the cache before you ran the tests?
echo 3 > /proc/sys/vm/drop_caches

No I did not. I am not aware of this requirement.
 

Are you using stub-domain or normal QEMU?

I don't think I am using stub-domain. I should be using normal QEMU.
 

What is the xm entry for the disk in your .xm.

Here is my Win XP Home Edition domU guest configuration:

#import os, re
#arch = os.uname()[4]
#if re.search('64', arch):
#    arch_libdir = 'lib64'
#else:
#    arch_libdir = 'lib'

kernel = "/usr/lib/xen/boot/hvmloader"
builder='hvm'
memory = 3072

# Should be at least 2KB per MB of domain memory, plus a few MB per vcpu.
#shadow_memory = 8
name = "winxphome32"
vif = [ 'bridge=eth0' ]
acpi = 1
apic = 1
disk = [ 'phy:/dev/virtualmachines/winxphome32,hda,w', 'phy:/dev/sr0,hdc:cdrom,r' ]

#device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
#device_model = '/usr/' + 'lib' + '/xen/bin/qemu-dm'
device_model = 'qemu-dm'

#-----------------------------------------------------------------------------
# boot on floppy (a), hard disk (c) or CD-ROM (d)
# default: hard disk, cd-rom, floppy
boot="cd"
#sdl=0
#vnc=1
#vncconsole=1
#vncpasswd=''

#serial='pty'
#usbdevice='tablet'
# onboard
#pci = [ '00:02.0' ]
# nvidia & firewire
pci = [ '01:00.0','02:01.0' ]
vcpus=2
# No passthrough
#gfx_passthru=0
# onboard
#gfx_passthru=1
# nvidia
gfx_passthru=2

# Can only pass through one usb device at a time
usb=1
# USB Unity Green Mouse
#usbdevice = 'host:1bcf:0007'
# USB A1pro Black Mouse
usbdevice = 'host:15d9:0a41'
# USB Keyboard
#usbdevice = 'host:0603:00f2'
# USB Sony IC Recorder
#usbdevice = 'host:054c:0271'
# USB Lexmark X1270 Color Printer
#usbdevice = 'host:043d:00ff'
# USB Lexmark X1270 Photo Scanner
#usbdevice = 'host:043d:007d'
# USB Lexmark X1270 Generic Hub
#usbdevice = 'host:043d:007a'
 

Are you using GPLV/Novell VMDK/etc accelerated drivers under Windows?

No. I don't think so.
 

How many iterations of the disk I/O benchmark did you run? As in, are those
screenshots of the first run, or the average over a couple of them.

They are not averages. They are first runs.




_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
<Prev in Thread] Current Thread [Next in Thread>