Hello,

 

Now, I have a trouble to run oprofile, especially opcontrol command, on a VM running on a XEN-based virtualized system.

If I run opcontrol command with an event option, such as LLC_MISSES, then the command prints errors like followings.

 

# opcontrol -e LLC_MISSES:10000

You cannot specify any performance counter events

because OProfile is in timer mode.

 

However, if I run the command on same native system (same H/W, but without Xen Hypervisor), it is possible to run the command.

I don't know why the command runs or not. :(

 

My Xen version is 4.3.2-pre.

Linux Kernel version is 3.10.20.

 

Best Regard.

 


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