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** Changed in: linux (Ubuntu)
Just a thought... You said you changed
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
That goes back to the normal setting on boot.
Have you had the issue since you did this, and did you make it
permanent?
Also, was it on the guest, or host, or both that you did this on?
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Thanks for this.
I've made the change you put above, but also for cpu1, cpu2, cpu3 etc...
I also installed rcconf and used it to disable the "ondemand" service
from starting, which might also help, I suppose.
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CPU frequency scaling is on by default in lucid.
fix:
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
Once cpu frequency scaling was turned off, I no longer had this issue.
This is a cpu timing issue.
Shouldnt this be turned off by default on ubuntu server, or at least a
I've the same problem with a INTEL P55 Mainboard. Very sad its a productive
machine.
I get it randomly all 2-4 weeks on one VM of 6. Always "cpu stuck" and the
websites on it are down. I hate it very badly.
Host: 2.6.32-24-server #41-Ubuntu (now installing #42)
VM: 2.6.32-24-server #41-Ubuntu (
I haven't had this problem for months. I don't think anything changed on
my side. This is a tricky one!
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Virtual machine soft lockup - CPU gets stuck for XX seconds
https://bugs.launchpad.net/bugs/333201
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I am getting the same error, using Ubuntu Server 10.04 64 bit, with a
Ubuntu Server 10.04 64 bit guest. I am trying first to turn off cpu
frequency scaling and see if that makes the issue go away. Right now I
can't reproduce, but occurs consistently after about 2 weeks of uptime.
Sergey- What are t
This is a long shot, but try another clocksource (normally kvm-clock).
I've had to disable kvm-clock altogether for another reason, and since
that time "soft lockups" did not happen on 9.10 systems.
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Virtual machine soft lockup - CPU gets stuck for XX seconds
https://bugs.launchpad.net/bugs/333
10.04.01 Guests built on 9.10 hosts using vmbuilder=0.12.4-0ubuntu1
(from maverick, I had issues with 0.12.3-0ubuntu1, I see there is a
newer version in -proposed) still present soft lock ups. It's only one
type of server, and tends to not be purely CPU driven although the
guests with higher load d
I still get this error from time to time. I'm not on the servers I
originally reported the issue with as that company went into
administration, so I can't say if they are still doing it.
I get the error on Ubuntu 9.10 and also 10.04. The guest and the host are both
10.04 now. The guests are JeOS.
I managed to find a KVM appliance image (there don't seem to be many around)
here:
http://ica-atom.org/docs/index.php?title=ICA-AtoM_virtual_appliance
This VM works with respectable performance and no errors on my server, so it
looks like kvm is in the clear. The only thing that was different in
Sorry I didn't see your question earlier.
I'm now running the release version of 10.04:
Linux 2.6.32-21-server #32-Ubuntu SMP Fri Apr 16 09:17:34 UTC 2010 x86_64
GNU/Linux
This particular machine isn't very high powered, but it should be at least
usable. It has a single quad-core L5320 Xeon (with
Marcus, what hardware are you experiencing this on?
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Virtual machine soft lockup - CPU gets stuck for XX seconds
https://bugs.launchpad.net/bugs/333201
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I'm getting this on 10.04 beta2 with 2.6.32-19-virtual (in the VM, built
with vmbuilder) and 2.6.32-19-server on the host on boot of a VM,
rendering virtualization completely inoperable, 100% failure rate. I'm
running qemu-kvm 0.12.3+noroms-0ubuntu5
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Virtual machine soft lockup - CPU gets stuck
Still seeing this issue.
Host:
Updated to the latest BIOS / Firmware on the DL360 G6 to date
2.6.31-20-generic
qemu-kvm=0.11.0-0ubuntu6.3
Guest:
2.6.31-20-server
Installing cpuburn and running two instances of BurnP6 on the guest
produced cpu soft lockups within 24 hours.
--
Virtual m
I occasionally experience this error on a 9.10 guest running
2.6.31-14-server on a 9.10 host with 2.6.31-14-generic and kvm=1:84
+dfsg-0ubuntu16+0.11.0+0ubuntu6.3 on an HP DL360 G6.
--
Virtual machine soft lockup - CPU gets stuck for XX seconds
https://bugs.launchpad.net/bugs/333201
You received
This is now fixed, we upgraded the BIOS on the server (Dell Poweredge
1950).
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Virtual machine soft lockup - CPU gets stuck for XX seconds
https://bugs.launchpad.net/bugs/333201
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The "soft lockup" has now also happened with the previous kernel
(2.6.27-7-server).
So it's happening with 2.6.27-11-server and also 2.6.27-7-server now.
I will upgrade the kernel on the host and virtual machine and wait.
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Virtual machine soft lockup - CPU gets stuck for XX seconds
https://bu
I meant 2.6.27-11.
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Virtual machine soft lockup - CPU gets stuck for XX seconds
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confirm error. Seems to be just 2.6.27-7.
Perhaps hardware specific? Dell Poweredge server here.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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Virtual machine soft lockup - CPU gets stuck for XX seconds
https://bugs.launchpad.net/bugs/333201
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Hi, sorry to be a pain, but this is a big deal for us.
It hasn't happened since switching to the other kernel. (so it did
happen with 2.6.27-11-server but hasn't happened yet with
2.6.27-7-server)
Can I get any more information to help you out? Please let me know.
--
Virtual machine soft lock
This problem just happened again. Here is an extract from /var/log/syslog on
the machine affected.
As before, the other virtual machine on this host was ok.
Mar 3 22:32:25 gla1-mailman1 kernel: [740722.950322] BUG: soft lockup - CPU#1
stuck for 61s! [fcheck:21720]
Mar 3 22:32:25 gla1-mailman1
Sorry if you got lots of e-mails there, I couldn't see how to add
multiple attachments.
I have more information on this.
For the virtual server host where none of our virtual machines suffer from
this, we are running the 2.6.27-7-server kernel.
For the virtual server host where just one of our v
** Attachment added: "lspci-vnvn.log"
http://launchpadlibrarian.net/22999269/lspci-vnvn.log
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** Attachment added: "dmesg.log"
http://launchpadlibrarian.net/22999261/dmesg.log
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Virtual machine soft lockup - CPU gets stuck for XX seconds
https://bugs.launchpad.net/bugs/333201
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** Attachment added: "uname-a.log"
http://launchpadlibrarian.net/22999273/uname-a.log
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Virtual machine soft lockup - CPU gets stuck for XX seconds
https://bugs.launchpad.net/bugs/333201
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** Attachment added: "version.log"
http://launchpadlibrarian.net/22999276/version.log
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Virtual machine soft lockup - CPU gets stuck for XX seconds
https://bugs.launchpad.net/bugs/333201
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** Attachment added: "kvm_crash.txt"
http://launchpadlibrarian.net/22999225/kvm_crash.txt
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Virtual machine soft lockup - CPU gets stuck for XX seconds
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