Re: [Xen-users] HDD-performance on HVM winxp

[Alexander Junghans <xen@xxxxxxxxxxxxx>]

Hi,

Iometer have been installed from http://www.iometer.org/ under XP.
Transfer request size to 1MB and 128k and measured.

1MB:
Read: 35MB/s
Write: 10MB/s

128k:
Read: 21MB/s
Write: 7,5MB7s

I think that there is a problem with your setup.
My setup uses a LVM Volume on Software Raid1 on
two SATA Drives.

XEN 3.2.1build from Source.

But I have a problem with the load in dom0, when
XP ist idle.

The CPU in Xentop is nearly 100% all the time, in
the xp dom.

What is your cpu level of the HVM Domain.

Thanks.
Alexander Junghans


Daniel Schwager schrieb:
> Hi together,
>
> i'm running a winxp hvm-domain without the GPLPV-driver.
>
> I imported an iscsi-target as a lun for the winxp-domain and
> run an iometer test directly on the winxp-domain:
>
>         Blocksize       type    MB/sec
>         ------------------------------
>         1 MB            read    25 MB
>         1 MB            write   0.8 MB
>         128 kb  read    25 MB
>         128 kb  write   0.8 MB
>
> If I run the same test on the xen-domain0 (hostsystem)using iometer's
> dynamo, I got
>         Blocksize       type    MB/sec
>         ------------------------------
>         1 MB            read    66 MB
>         1 MB            write   55 MB
>
> My problem ist the 0.8MB/sec in the winxp-domain...
> Is there a way to track down the performance issue ?
>
> [root@xen04 /var/log/xen]$ rpm -qa | grep xen
> kernel-xen-devel-2.6.21-2957.fc8
> kernel-xen-devel-2.6.21.7-3.fc8
> xen-libs-3.1.2-2.fc8
> kernel-xen-2.6.21.7-3.fc8
> xen-3.1.2-2.fc8
> xen-libs-3.1.2-2.fc8
> kernel-xen-2.6.21-2957.fc8
> kernel-xen-2.6-doc-2.6.21.7-3.fc8
>
> [root@xen04 /var/log/xen]$ uname -a
> Linux xen04.test 2.6.21-2957.fc8xen #1 SMP Tue Feb 12 13:07:27 EST 2008
> x86_64 x86_64 x86_64 GNU/Linux
>
>
> regards
> Danny
>
>
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>   
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