1
vote
1answer
76 views

Ubuntu on VPS becomes unresponsive: BUG: soft lockup - CPU#0 stuck for 22s

We have a VPS running Ubuntu, on Xen. The problem is this, about once a day, for about 20-50 minutes, at a random time, the server becomes completely unresponsive to the outside world. After this ...
0
votes
0answers
110 views

Xen Kernel - Only One Core Showing

So I have a dedicated server running the Xen kernel but for some reason it only shows one core instead of 4? Does that mean that my VPS that is running is only getting access to the 1 core or do they ...
1
vote
1answer
816 views

How to limit excessive CPU usage from guest OS in KVM

On Xen it is easy as we have CreditScheduler [1], so on a machine with each guest OS sharing only portion of CPU, e.g. 6 guests running on top of a dual core CPU, excessive CPU usage is prohibited. ...
4
votes
1answer
702 views

Difference between Processors and CPU core

can any one please clarify the difference between actual no of processors and CPU cores. in my case i am having Intel Xeon® Processor E5620 as per intels product page: its having # of Cores 4 # of ...
0
votes
1answer
293 views

pv_ops Kernel ignoring cpu hotplug under Xen 4 DomU

I have a Xen 4.0.1 DomU running Debian Squeeze with the stock 2.6.32-5 Kernel. When I add CPUs via xm-vcpu-set they correctly show up in /sys/devices/system/cpu but are not set online and ...
0
votes
1answer
191 views

xen virtual machines get to many porcentages of cpus

This is my question. I have one Xen server with 8 CPU's and 6 virtual machine running, each virtual hard disk are running in diferent physical hardisk. Everything worked fine but sometimes one virtual ...
3
votes
6answers
1k views

Which CPU for XEN - LAMP testbed - Budget

Dear serverfault knowledgeables, im in a decision dilemma right now, which I can't resolve due to lack of hands on experience. I need to build a testbed for basically virtualizing a LAMP application ...
0
votes
2answers
421 views

Disable CPUs on boot but allow hotplug in Xen

I would like to create a Xen VM with 32 possible VCPUs but have the guest OS only enable 2 of them on boot. Are there some kernel parameters I can pass in to enable this? I've played around with ...
4
votes
2answers
1k views

Xen - Make one guest OS have 2 cpus?

I have inherited a Xen setup. The dom0 and domU's are all linux. dom0 has 8 cores (or CPUs, I'm not sure). We want to run more stuff on one domU. I want to make it a multicore CPU, ie so that the domU ...
1
vote
6answers
3k views

Which 939 socket chips support AMD-V?

I know it'd likely be more cost effective to buy a new system with AMD-V or Intel VT-x, but to prove it, I need to know if there are any 939 socket chips that feature AMD-V and if so what they are. ...
0
votes
1answer
291 views

Is there a way to give a xen vm with windows more than one virtual cpu?

I have a quad core machine which is running debian with a xen kernel. I am running a couple linux servers on there which don't do a lot of CPU intesive stuff, but I have there a windows server 2008 ...