1
vote
1answer
2k views

KVM causes high CPU loaded when cache='none'

I've followed instructions on http://www.linux-kvm.org/page/Tuning_KVM. Host is Debian Squeeze Kernel 3.2, QEMU 1.0, libvirt 0.9.12 (all from squeeze-backport). All 4 guests are Debian Squeeze Kernel ...
1
vote
1answer
408 views

Is there any way that I can control the CPU resources sharing among Xen virtual machines?

I'm going to set up three or two Xen virtual machines on one physical machine. I want those VMs to share different CPU time on average. I've Googled for a long while but still haven't been able to ...
3
votes
2answers
597 views

Can an ESX server under heavy load cause cpu spikes on guest VM's?

So we have a number of vm's running on an ESX 4.1 server for product testing. The ESX Server is at times under heavy load. We've been experiencing high CPU levels during some use cases, but we can't ...
8
votes
2answers
4k views

How to monitor CPU usage and performance on a Hyper-V server with several VM's

I have a server that is running Windows 2008 64 bit Hyper-V, with 8 gigs of RAM and Intel Xeon X3440 @ 2.53 Ghz, which gives me 8 logical cores in the performance monitor on the host system. I have ...
1
vote
5answers
6k views

CPU's on Hyper-V host system is just idling, even though VM's are at full throttle

I have a server that is running Windows 2008 64 bit Hyper-V, with 8 gigs of RAM and Intel Xeon X3440 @ 2.53 Ghz, which gives me 8 logical cores in the performance monitor on the host system. I have ...