Just started using kvm (qemu? I'm quite fuzzy with the terminology).
To test if everything works fine, I created logical volume on my lvm, and then started virtual machine using:
qemu-system-x86_64 -machine type=pc,accel=kvm -cpu host -hda /dev/vgroup/kvm-1 -m 1024
(of course first I did the same but with -cdrom, to install system).
It seems to be ok, but cpu intensive operations (bzip2/sha512sum) seem to be ~ 20% slower than on host system. Is that normal? Can I do/change tune anything?
Also - is there anything I should add to my qemu invocation to make it better/faster/safer?
I did find some tutorials but they are usually very basic, and don't really focus on performance/security.