http://wiki.xenproject.org/ has a lot of useful info.
You can achieve better disk performance by using raw LVM volumes and
using phy: in the disk config line.
On Tue, 5 Jan 2016, Luca Tongiani wrote:
> Hi,
> Thanks for the hints , I did experiment with the changes you suggested and
> now we were
Hi,
Thanks for the hints , I did experiment with the changes you suggested
and now we were able to achieve the following result : the performance
of the domU is 50 % of the dom0 .
Is it possible to improve these numbers more ?
Also , do you have any advice on where to find extensive documenta
There are a few issues in the config files. In conf_DomU_WindowsHVM:
- device_model is set to /usr/lib64/xen/bin/qemu-dm, which is the old
qemu-xen-traditional device model, known to have worse disk
performance. Just delete this line to use the newer QEMU based tree.
- disk is set to [ '/dev/v
I forgot : all drivers about Xen frontend have been compiled into the
kernel (not module).
Il 05/01/2016 13:42, Stefano Stabellini ha scritto:
The xenstore-ls output is not complete. Could you please send it again?
I noticed from the DomU config file that it is not a Windows VM, as
previously
Sorry but I sent these logs because I have no longer available the
Virtualizer of Windows DomU .
In any case the problem of the performance of disks is present both in
the case of Linux machines PV and Windows machines HVM .
I attach the complete log of the server and the conf of my HVM Windows
The xenstore-ls output is not complete. Could you please send it again?
I noticed from the DomU config file that it is not a Windows VM, as
previously discussed, but a Linux VM. That is OK, but of course in that
case you won't be able to use the Windows PV drivers which I linked.
Linux has its own
Hi,
thanks in advance for your reply :)
I have attached the following email configuration DomU and the output
you have requested .
Performance disk are all my machines the most serious problem , even if
they are used powerful hardware .
Differences in Disk writing in DomU are 1/3 of those of
Could you please post your VM config file and the output of
xenstore-ls once the VM has completed the boot sequence?
On Tue, 5 Jan 2016, Luca Tongiani wrote:
> Hi Stefano,
> im writing to you because im having issue with I/O disk in my DomU With Xen
> (Gentoo based system).
>
> I tried to use th
Hi Stefano,
im writing to you because im having issue with I/O disk in my DomU With
Xen (Gentoo based system).
I tried to use the driver that you provided for the PV .
But the results are still not good , there is no way to support the use
of Xen VirtIO disk ? Many thanks in advance
Luca
Il
Hello Luca,
the recommended way to increase disk performance would be to use Xen PV
disks. You just need to install the Windows PV drivers:
http://www.xenproject.org/developers/teams/windows-pv-drivers.html
But using VirtIO disk should also increase performance, even though
most probably not as
On Tue, 2015-12-15 at 14:09 +0100, Luca Tongiani wrote:
> Hi to all,
> I'm writing you this mail for asking some advice about a great problem
This sort of question is on topic for xen-users@, but since it is not a
development question not for xen-devel@. I've moved the To line over and am
bccing
Hi to all,
I'm writing you this mail for asking some advice about a great problem
i'm havin in running a Windows VM (HVM) onto a Xen (Gentoo based) Hypevisor.
I need to achieve maximum performance from this VM because of intense
SQL tasks running in it.
I've seen good improvement in IO on di
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