Re: [Xen-users] Poor domU Installation Performance on AM2 3800+ X2 unser OpenSUSE 10.1

[Steve Higton <steve.higton@xxxxxxxxxxxxx>]

It turned out that the problem was due to the amount of memory assigned to the 
domU during installation.  OpenSUSE 10.1 32bit happily installs with 256MB.  
OpenSUSE 10.1 64bit requires 512MB for installation.

On Saturday 19 August 2006 15:05, Steve Higton wrote:
> Could changing the scheduling settings make any differrence to the amount
> of time the domU spends in a blocked state?
>
> On Saturday 19 August 2006 14:56, Steve Higton wrote:
> > Hi All,
> >
> > I'm currently installing a minimal text mode installation of OpenSUSE
> > 10.1 as a DomU in an OpenSUSE 10.1 host using the SUSE xen installation
> > tool. However, the performance is terrible, the text mode installer has
> > taken 2 hours to reach the part where it partitions the disks.
> >
> > Hardware specs as follows:
> >
> > Motherboard: MSI K9N Ultra
> > CPU: AM2 3800+ X2
> > RAM: 1GB DDR 667 Crucial Ballistix
> > HD: 300GB Seagate 7200.8
> >
> > I'm a little lost as to how to diagnose this problem; xm top shows the
> > domU as being in the blocked state for most of the time.  I've done a
> > quick test of the disc performance with hdparm -t and the result was
> > 61MB/s and the domU's disc is an LVM partition on the dom0 machine so I
> > don't think disc I/O is the problem.  Also, I'm running the suse
> > installed via a VNC connection to the desktop of the dom0, the VNC
> > performance is very good so network performance shouldn't be the
> > bottleneck.
> >
> > The config file is as follows:
> > disk = [ 'phy:/dev/system/vm1_suse_101,hda,w' ]
> > memory = 256
> > vcpus = 1
> > builder = 'linux'
> > kernel = '/tmp/YaST2-05512-mQaRrP/vmlinuz-2.6.16.13-4-xen'
> > ramdisk = '/tmp/YaST2-05512-mQaRrP/inst-initrd'
> > name = 'vm1'
> > vif = [ 'mac=00:16:3e:fd:6f:61' ]
> > localtime = 0
> > on_poweroff = 'destroy'
> > on_reboot = 'destroy'
> > on_crash = 'destroy'
> > extra =
> > 'install=nfs://192.168.0.12/data/replaceable/OS/OpenSUSE/SL-10.1/inst-sou
> >rc e TERM=xterm textmode=1'
> >
> > Does it matter that the dom0 is running an SMP 64bit kernel but I've only
> > allocated 1 VCPU to the domU?
> >
> > I've used this OpenSUSE installer many times on a socket A athlon XP
> > 3000+ many times without problem.  In fact, this email has been sent via
> > a xen domU acting as my router! :-)
> >
> > Thanks in advance for any help.
> >
> > Steve.
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
>
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