поддержка Intel Broadwell Server QPI uncore PMU (support for Intel Broadwell Server QPI uncore PMU)
Имя (Name)
libpfm_intel_bdx_unc_qpi - support for Intel Broadwell Server
QPI uncore PMU
Синопсис (Synopsis)
#include <perfmon/pfmlib.h>
PMU name: bdx_unc_qpi0, bdx_unc_qpi1
PMU desc: Intel Broadwell Server QPI uncore PMU
Описание (Description)
The library supports the Intel Broadwell Server QPI uncore PMU.
This PMU model only exists on various Broadwell server models
(79, 86).
Модификаторы (Modifiers)
The following modifiers are supported on Broadwell server QPI
uncore PMU:
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 QPI 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].
i Invert the meaning of the threshold or edge filter. If
set, the event counts when strictly less than N
occurrences occur per cycle if threshold is set to N. When
invert is set, then threshold must be set to non-zero
value. If set, the event counts when the event transitions
from occurring to not occurring (falling edge) when edge
detection is set. This is a boolean modifier
