I''ve installed Xen on this machine y a different way as a normal one. I do the stupidity to install Xen thru "yum install xen" and as it is expected Xen didn''t work. I then unistall xen, re-install the install script and Xen now loads well. The only bad thing is xend which can not run because it outputs the following message : "grep: /proc/xen/capabilities - File not found " translated from french. In fact, there is no /proc/xen/capabilities nor /proc/xen/ directory. Who is intended to create this directory/file ? Thanks for a help Horacio _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Steve Higton
2006-Aug-19 13:56 UTC
[Xen-users] Poor domU Installation Performance on AM2 3800+ X2 unser OpenSUSE 10.1
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-source 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@lists.xensource.com http://lists.xensource.com/xen-users
Steve Higton
2006-Aug-19 14:05 UTC
Re: [Xen-users] Poor domU Installation Performance on AM2 3800+ X2 unser OpenSUSE 10.1
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-sourc >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@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Steve Higton
2006-Aug-19 20:53 UTC
Re: [Xen-users] Poor domU Installation Performance on AM2 3800+ X2 unser OpenSUSE 10.1
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@lists.xensource.com > > http://lists.xensource.com/xen-users > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Ferrero Horacio wrote:> I''ve installed Xen on this machine y a different way as a normal one. > > I do the stupidity to install Xen thru "yum install xen" and as it is > expected Xen didn''t work.I don''t know yum.> I then unistall xen, re-install the install script and Xen now loads > well. > > The only bad thing is xend which can not run because it outputs the > following message : "grep: /proc/xen/capabilities - File not found " > translated from french.It seems that you must compile your own kernel. Capabilities is a kernel feature.> In fact, there is no /proc/xen/capabilities nor /proc/xen/ directory.Will emerge when you booted with this kernel IMHO.> Who is intended to create this directory/file ? > > Thanks for a help > > > HoracioI run XEN on an 2,4 GHZ Celeron (Fujitsu Siemens Motherboard) and it works quite well. OS is gentoo-linux, installation was with self compiled kernel. Hope that helps, Greetings, Robert Welz _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users