LIBPFM(3) Linux Programmer's Manual LIBPFM(3)NAMElibpfm_intel_knc - support for Intel Knights Corner
SYNOPSIS
#include <perfmon/pfmlib.h>
PMU name: knc
PMU desc: Intel Knights Corner
DESCRIPTION
The library supports Intel Knights Corner processors.
MODIFIERS
The following modifiers are supported on Intel Knights Corner proces‐
sors:
u Measure at user level which includes privilege levels 1, 2, 3.
This corresponds to PFM_PLM3. This is a boolean modifier.
k Measure at kernel level which includes privilege level 0. This
corresponds to PFM_PLM0. This is a boolean modifier.
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].
t Measure on all threads at the same time assuming hyper-threading
is enabled. This is a boolean modifier.
AUTHORS
Stephane Eranian <eranian@gmail.com>
September, 2012 LIBPFM(3)
