Displaying 20 results from an estimated 6000 matches similar to: "hardware clock drift and CDR"
2007 Feb 06
2
real time clock drift
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
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Xen-users mailing list
2013 Jan 23
3
clock sync/drift
Hi,
We have a little over 100 servers, almost all running CentOS 5.7.
Virtually all are Dell servers, generally a mix of 1950s, R610s, and
R410s.
We use NTP and/or PTP to sync their clocks. One phenomenon we've
noticed is that (1) on reboot, the clocks are all greatly out of sync,
and (2) if the PTP or NTP process is stopped, the clocks start
drifting very quickly.
If it was isolated to
2007 Feb 02
2
Clock Drifts Off
I installed CentOS 4.4 32 bit on a dual core AMD64 motherboad. Its a
Tyan Tomcat K8E motherboard with socket 939. The clock keeps drifting
off like 5+ minutes an hour. Run ntpupdate hourly to compensate.
Any ideas why or how to fix?
Matt
2016 Jun 21
0
Heavy clock drifts inside of KVM guests (qemu-kvm 2.1.2)
Dear list(s),
we are running a cluster of virtual machines on ganeti 2.15.2 on top of
qemu-kvm 2.1.2. Hosts are Debian jessie (Kernel 3.16). We have big trouble
with timekeeping on guests, no matter if these guests are lenny, squeeze,
wheezy or jessie. Clock drifts heavily on some, others are fine. There is
no obvious pattern on which guest this happens and on which not, but it
seems the clock
2016 Jun 21
0
Heavy clock drifts inside of KVM guests (qemu-kvm 2.1.2)
Dear list(s),
we are running a cluster of virtual machines on ganeti 2.15.2 on top of
qemu-kvm 2.1.2. Hosts are Debian jessie (Kernel 3.16). We have big trouble
with timekeeping on guests, no matter if these guests are lenny, squeeze,
wheezy or jessie. Clock drifts heavily on some, others are fine. There is
no obvious pattern on which guest this happens and on which not, but it
seems the clock
2009 Jan 11
2
drifting clock in domUs
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.
2012 Jun 04
2
system date using ntp client is drifting
Hi,
I have a set of servers whose system time is drifting. I am running ntp
client on CentOS 5.8. My config is here -> http://fpaste.org/s55U/
Anything i am missing?
Regards,
Kaushal
2012 Jun 28
8
GPLPV, clock drift and PVUSB in Windows XP HVM
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
2013 May 31
1
Clocks drift again
Hi All,
Sorry again to bother you with this but there is really something I
don't fully understand about client/server clock syncs.
If I connect to the stream with a fresh browser, I can measure between
5-10 secs latency.
I keep listening to it for while, and the delay between server and
client grows as listening is going on.
As pointed out Philipp yesterday to me, it's approximately a 5%
2009 Jul 01
5
Xen time drift issues
Hello everyone!
I been observing some peculiar time drift on my Xen domains (dom0 and
domUs). The time (as returned by timeofday) on my domains drifts at
an almost steady rate from the real time ( as read from the time stamp
counter ).
The drift is so constant that it makes me think there should be some
simple explanation for it in the way Xen keeps time.
Some info about my set up:
guest OS:
2009 Oct 13
5
timekeeping on VMware guests
Howdy,
I am having time-drift issues on my CentOS VM. I had referred to
following documentation:
http://wiki.centos.org/TipsAndTricks/VMWare_Server , however it didn't
help. I used kickstart for creating this VM and I am listing important
steps in ref to timekeeping issue. Any comments or suggestion would be
appreciated.
-
CS.
-------------------
# For EL5 virtual machines, Append the
2007 Apr 18
1
Use of absolute timeouts for oneshot timers
I've been thinking a bit more about how useful an absolute timeout is
for a oneshot timer in a virtual environment.
In principle, absolute times are generally preferable. A relative
timeout means "timeout in X ns from now", but the meaning of "now" is
ambiguous, particularly if the vcpu can be preempted at any time, which
means the determination of "now" can be
2007 Apr 18
1
Use of absolute timeouts for oneshot timers
I've been thinking a bit more about how useful an absolute timeout is
for a oneshot timer in a virtual environment.
In principle, absolute times are generally preferable. A relative
timeout means "timeout in X ns from now", but the meaning of "now" is
ambiguous, particularly if the vcpu can be preempted at any time, which
means the determination of "now" can be
2004 May 26
1
clock skew again
Hi,
ok this time i have really done every thing i can
do.
i went to
http://www.bytefusion.com/download/win2000/middle.htm
and downloaded the presentTense time server for
windows 2000. i installed it on my backup domain
controller.
my sys admin wont allow it on the primary domain
controller.
ok so after installing it on niit91 (10.10.11.91)
i came back to my linux box started the ntpd and
2008 Jan 08
1
Xen clock drift
Hello All,
Consider a CentOS-5.1 Xen server (2.6.18-53.1.4.el5xen) hosting two
domains running CentOS-5.1 (2.6.18-53.1.4.el5). One domain has a fairly
accurate clock, the other domain has a clock that gains ungodly amounts
of time, roughly one minute every two or three minutes. For a fix, one
suggestion is to run this command in DomU:
echo 1 > /proc/sys/xen/independent_wallclock
This
2009 Aug 12
2
ntp will not drift to correct time
Hi
On 5.3 i have a situation where some boxes have been 3 or 4 seconds out
and restarting ntpd has fixed the issue.
What i dont understand is why the clocks did not drift to the correct
time when the config seems correct in that restarting ntp did correct
the time.
Is there something 'special' i need to do in order for the drift to work?
$ cat /etc/ntp.conf
restrict default
2008 May 13
8
Time moved backwards
Hello,
I would like to suggest a change in handling of 'Time moved backwards'
problem.
Right now dovecot just dies. So, the scenario:
1) Colocation server is shut down for some reason. The internal time drifts.
2) Server is started again.
3) Dovecot starts successfully.
4) In about a minute, NTP daemon feels confident about adjusting the system
time.
5) Dovecot sees the changed time and
2009 Jan 27
2
Monitoring time drift of hosts
In reading the Xen list there are frequent postings regarding NTP time
drift issues for virtualized guests, correct configurations, etc.
We have a solution (no cost) for monitoring time drift of hosts for
anyone needing to do so or to determine whether their environment is
maintaining time synchronization. For etiquette I am not publishing the
information to the list mailing. If interested,
2009 Aug 19
1
Mouse Cursor drifts in some directx games
Hello,
I am currently attempting to run some windows games through wine, specifically Fable - The Lost Chapters and The Elder Scrolls III - Morrowind and I am experiencing problems with my cursor drifting during game play.
When I start the game (as soon as the menu screen) the mouse is initially stable, but after I move the mouse it will begin to drift vertically down at a constant speed
2006 Nov 24
19
Time/clock issues with Xen 3.0.3?
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