I've just started doing some profiling work on SandyBridge recently, so the following questions might be stupid.
I've checked the Intel SDM and found CYCLE_ACTIVITY should be very useful for my work. But when I actually tried to get that counter but found it seems that only IvyBridge has it. It that right?
In other words, my goal is to find how many cycles are stalled on data for a certain application. How can I do that on a SandyBridge machine (or IveyBridge).
Thanks a lot!