similar to: Desynchronize clock

Hey, I have rather new installation of xen, dom0 is running ntpd and is perfectly in time. All domU''s are ~23s in future. Running ntpd on the domU''s seem to have no effect, /proc/sys/xen/independent_wallclock appears to have no effect. I''m running xen-unstable and 2.6.16-rc4 in AMD64 box. Any tip would be appricated. Thanks, -- ++ytti

Hello, On a xenserver with several (39) domUs, we experience problems with the system clock of the domUs. The clock seems to drift away several seconds up to two minutes from the dom0 clock. We do have set independent_wallclock=0. According to the docs (i.e. http://wiki.xensource.com/xenwiki/InstallationNotes) that way domUs should use the dom0 clock, but apparently that''s not the case.

I''m using FC5 with its Xen 3.0.2-2 package and 2.6.16-1.2118_FC5xen0 kernel. I''ve got a Pentium 9xx chip with virtualization enabled in the BIOS; it appears to be VT-enabled, since xm dmesg includes "(XEN) VMXON is done". I base my config file on example.hvm and on previous emails to this list. Unfortunately, I don''t get very far. xm create winxp.conf

Hello, I know, often asked, often discussed .. No recommendation from Citrix. What is the better solution? 1) use ntp in the XEN host and synchronize the guests with the clock running on the control domain (independent_wallclock=0, what the default is) 2) or use ntp in host and guest (and independent_wallclock=1) I ask, because the XEN host (bare metal) has a more stable clock and if the ntp

Hi, using SLES10 I''m unable to synchronize the time of DomU with that of Dom0. There is a persistent offset of about 3 seconds! Here''s a small history (not actual output): remote refid st t when poll reach delay offset jitter rkdvmso1.dvm.kl 192.168.0.11 5 u - 64 1 0.136 -2977.1 0.099 *rkdvmso1.dvm.kl 192.168.0.11 5 u 2 64

The time appears to be perfect inside dom0, however all the domU''s tend to have a slightly faster date which gets further out of sync every day. I''m currently using Xen 3.0.3 with Gentoo Linux, under 3.0.2 I had no problems with domU clocks. Are there any known issues which could cause this? I''d strongly prefer not to run ntpd in every domU, having all domU clocks in

Hi list, one and hopefully last strange thing I figured out ist the systime of my guests. Dom0 uses ntp for time syncronisation. I set the time on my guests manually but after reboot any machine (Windows server, XP, Freebsd, even PV Machines like ubuntu) all run local time - 2 hours. /proc/sys/xen/independent_wallclock is set to 0 so actually the time should be set by dom0...(?) Any

Hi All, I have just started looking at the code for Xen so please bear with me. A domU Linux kernel running with independent_wallclock=1 seems to sync its time with dom0 after every "xm unpause" (obviously preceded by an "xm pause"). I don''t see where the xtime variable is being updated after an "xm unpause", i.e., domain_unpause_by_systemcontroller().

1. Shouldn''t the GPLPV drivers take care of the (bad) clock drift I''m experiencing in my Windows XP HVM? Or is there some other way around this problem that I haven''t been able to find on Google? How can I tell if the GPLPV drivers are active? I''ve added the /gplpv switch to the boot.ini file and the virtual NIC is definitely using the GPLPV version but other

Karsten M. Self wrote: > on Thu, Dec 15, 2005 at 01:38:29PM -0500, Steve Brueckner > (steve@atc-nycorp.com) wrote: >> I''m using Fedora Core 4. I need to create an ssh port forwarding >> tunnel to my xen0 domain when my xenU domain starts up, so I added >> this to the xenU''s /etc/rc.d/rc.local: >> >> ssh -v -f -L 5500:localhost:5501 xen0_ip

Hi, When dom0 is under heavy load any Vista or Windows 2008 HVM''s that are running and have multiple cpu''s assigned often BSOD with code 0x00000101 "A clock interrupt was not recevied ona secondary processor within the allocated time interval" It only happens if the load in dom0 is high enough to make the mouse pointer lagged, once the mouse fails to track in

Hi, When dom0 is under heavy load any Vista or Windows 2008 HVM''s that are running and have multiple cpu''s assigned often BSOD with code 0x00000101 "A clock interrupt was not recevied ona secondary processor within the allocated time interval" It only happens if the load in dom0 is high enough to make the mouse pointer lagged, once the mouse fails to track in

We have an Intel VT system, and we have successfully installed Xen 3.0 on it, but we cannot find out how to run Windows as a guest OS. Someone on this mailing list has successfully done it, but did not say how. Thanks, - Hao _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

Hi! Can anybody explain how Xen deals with time? On traditional, non-virtualized systems I run an ntpd on every system to keep the time accurate. But what to do on xenified systems? Do all the domU''s get the time from dom0 meaning it is sufficient to run an ntpd there or do I have it to setup in every domU? Thanks for your help! Kind regards, Stephan

This must be documented somewhare but I checked the Xen 3.0 manual and the word "clock" doesn''t even exist in it. I checked the FAQ as well. I am running Xen 3.0.1 and an AMD64 CPU. I found that DOMUs time clock drifts ahead. I installed ntpdate and it reports to change the time but it does not. David _______________________________________________ Xen-users mailing list

I installed Ubuntu Feisty successfully, then I configured the network (static IP) and things worked well. Then I installed Xen using "apt-get install ubuntu-xen-desktop". I could boot the xen kernel, and booted succesfully to dom0, however, there''s no network for dom0. According to network manager, I saw that Ubuntu recognizes now 4 unconfigured adapters (veth0, veth1, veth2,

Hi, I am facing problem in sync time within DomU with Dom0. After gone through mailing lists, I have set /proc/sys/xen/independent_wallclock to 0. But still DomU are not syncing their time :-S Machine using kernel-xen-2.6.19-1.2911.fc6 xen-3.0.3-3.fc6 xen-libs-3.0.3-3.fc6 Please advice to solve this weird problem, Thanks _______________________________________________ Xen-users mailing list

(Moving from offlist discussion.) I''m interested in opinions... Assume there are four single vcpu domains A, B, C, D, running on a 2-CPU physical machine. We wish to test for time skew on domain A. Assuming B, C, and D are all running some workload that attempts to fully saturate the (single) cpu. 1) Should the affect on domain A be essentially the same regardless of what load

Hi all, where can I set the date in domU. ''ntpdate -u ...'' works but dosn''t set the date. date MMDDhhmm has also no effect. What can I do? -- cu Roland Kruggel  mailto: rk-liste@gmx.de System: Intel 3.2Ghz, Debian etch, 2.6.15, KDE 3.4 _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com

The initial values of the wallclock time in the shared info page are set for PVHVM guests when the hypercall page is initialized, since the hypercall page is not reinitialized on resume, the hypervisor wallclock time is not properly set on resume. Fix it by forcing an update of the wallclock values when the shared info page is mapped. Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>