NAME¶
libpfm_intel_ivbep_unc_qpi - support for Intel Ivy Bridge-EP QPI uncore PMU
SYNOPSIS¶
#include <perfmon/pfmlib.h>
PMU name: ivbep_unc_qpi0, ivbep_unc_qpi1
PMU desc: Intel Ivy Bridge-EP QPI uncore PMU
DESCRIPTION¶
The library supports the Intel Ivy Bridge Power QPI uncore PMU. This PMU model
only exists on Ivy Bridge model 62.
MODIFIERS¶
The following modifiers are supported on Intel Ivy Bridge 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].
AUTHORS¶
Stephane Eranian <eranian@gmail.com>