KVM - The Linux Kernel-Based Virtual Machine
News, Blogs and Resources on the Linux (KVM) Kernel-Based Virtual Machine
Multi-core performance
May 11, 2008 - 11:51pm
Running KVM on Fedora 9 w/2.6.25 kernel on AMD Quad-Core (Phenom 9850 BE). It seems as though KVM is not taking full advantage of the processor. Although the VM's run at a good speed, VMM only allows you to select 1-vcpu. And even then the cpu graph shows that the cpu is only performing at a max of 25%. If you start the VM with more than 1-vcpu it seems as though performance even gets a lot worse.
Regards,
Gerry
BTW: AMD got my support by fully supporting virtualization from day 1 by not allowing vendors to disable it and without requiring messing around in the bios.
Hi Gerry,
You said that the vmm only allows you to select 1-vcpu? How are you starting the vmm? by command line or a GUI tool? Also, what guest are you running?
Haydn
This is in the VMM gui where I could only select 1-vcpu. I am running CentOS 5.1 in guest on an F9 host.
Regards,
Gerry
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