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Hardware Performance Counters/Events for Northbridge (Un-Core) Agents

Question asked by asudevils2010 on May 8, 2013

Hello there,

I'm wondering if there exists an architecture/counters on the northbridge that allows for performance event monitoring. It makes sense to me that the northbridge could have this capability as it is the connection where the DRAM, CPUs, DISP, GFX, SouthBridge, etc all connect. For example, if I wanted to see the graphics bandwidth then I would use this architecture to measure the number of DRAM accesses through the northbridge from the graphics IO link and multiply accordingly.


Does this functionality or anything like it exist?