libpfm_intel_snbep_unc_imc - support for Intel Sandy Bridge-EP
Integrated Memory Controller (IMC) uncore PMU
#include <perfmon/pfmlib.h>
PMU name: snbep_unc_imc[0-3]
PMU desc: Intel Sandy Bridge-EP IMC uncore PMU
The library supports the Intel Sandy Bridge Integrated Memory
Controller (IMC) uncore PMU. This PMU model only exists on Sandy Bridge
model 45. There are four IMC PMUs per socket.
The following modifiers are supported on Intel Sandy Bridge C-Box
uncore PMU:
- i
- Invert the meaning of the event. The counter will now count IMC cycles in
which the event is not occurring. This is a boolean modifier
- e
- Enable edge detection, i.e., count only when there is a state transition
from no occurrence of the event to at least one occurrence. This modifier
must be combined with a threshold modifier (t) with a value greater or
equal to one. This is a boolean modifier.
- t
- Set the threshold value. When set to a non-zero value, the counter counts
the number of IMC cycles in which the number of occurrences of the event
is greater or equal to the threshold. This is an integer modifier with
values in the range [0:255].
Stephane Eranian <eranian@gmail.com>