Meaning of performance counters (OpenGL) ?

Discussion created by ddungum on Sep 14, 2009
Latest reply on Jan 17, 2010 by frax

When I run GL_AMD_performance_monitor functions, it returns almost a hundred of counter groups and more than 7000 counter names.

But their names are pretty user-unfriendly (e.g, CP_000, TCP2_001...), so I can't guess their purpose. I read extension spec and "R6xx/R7xx Register Reference Guide", but they didn't help.

What's the meaning of the performance counters ?