Red Hat Bugzilla – Bug 845751
qemu virtualization extremely slow
Last modified: 2013-01-09 07:06:10 EST
qemu is extremely slow when running a CPU that does not support virtualization.
The virtual machine performance makes it impossible to work with.
But when using another product like vmware the virtual machine performs very good.
My laptop is not that old but unfortunately it does not support virtualization.
egrep '^flags.*(vmx|svm)' /proc/cpuinfo
It would be very useful for my daily work if qemu works as well as vmware.
Never worked fine as long as I remember.
I keep switching to vmware every release of qemu I try hoping that some day some one will look at vmware code and implement the same algorithm.
Steps to Reproduce:
1. create a vm in a CPU that doest not support virtualization.
Super slow virtual machine and impossible to work with.
Should work as well as vmware as the system configuration is the same.
There's no possible way we can solve this in Fedora.
I won't even suggest that you take it up with upstream
qemu unless you have a huge set of patches and/or a
radical new approach.