On Sun, Mar 18, 2012 at 09:47:55PM +0530, shashank rachamalla wrote: > >> I guess things are working fine with perf. But why not with oprofile ? > >> > > Looks like it. I never tried oprofile. Will try to reproduce your > > problem and see what oprofile is doing. > > I am using ubuntu 10.04 with 2.6.32-21-generic kernel as guest and > oprofile 0.9.6. > Also, I have tried to capture kvm-events ( perf patch ) in host while > running oprofile and perf in guest. > Please see the attachment. I have run the tests in three cases for the > around 5 secs. > > There are more number of MSR reads and writes in case of perf which I > think is normal. However, there are very few MSR reads and writes with > oprofile. Also, the number of NMI exceptions are too high in case of > oprofile. > Which host kernel are you using? Try latest kvm.git and check if you see something unusual in dmesg. -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
