Performance counters for each guest in KVM

Question

My goal is to find the number of instructions after each interrupt passed to the guest in KVM. I am using the retirement counter instruction, programming the corresponding registers with wrmsr. I turn on the counter before the vmlaunch / vmresume command and turn it off on vmexit, which returns. This approach is not very good, as it also considers instructions in host interrupts and other processes. I am using kvm for the Intel I3 processor. Is there any provision for receiving counters only in guest mode in Intel architecture?

Answer 1

I do not have complete information to answer your question, but these links may help:

• http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization/ch34s02.html

• http://www.mail-archive.com/ [e-mail] /msg40722.html

• http://clalance.blogspot.com/2009/01/kvm-performance-tools.html