поддержка Intel Westmere uncore PMU (support for Intel Westmere uncore PMU)
Имя (Name)
libpfm_intel_wsm_unc - support for Intel Westmere uncore PMU
Синопсис (Synopsis)
#include <perfmon/pfmlib.h>
PMU name: wsm_unc
PMU desc: Intel Westmere uncore
Описание (Description)
The library supports the Intel Westmere uncore PMU as implemented
by processors such as Intel Core i7, and Intel Core i5 (models
37, 44).
The PMU is located at the socket-level and is therefore shared
between the various cores. By construction it can only measure at
all privilege levels.
Модификаторы (Modifiers)
The following modifiers are supported on Intel Westmere
processors:
i Invert the meaning of the event. The counter will now
count 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. This is a boolean modifier.
c Set the counter mask value. The mask acts as a threshold.
The counter will count the number of 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].
o Causes the queue occupancy counter associated with the
event to be cleared (zeroed). This is a boolean modifier.
