libpfm_intel_hswep_unc_qpi - support for Intel Haswell-EP QPI
uncore PMU
#include <perfmon/pfmlib.h>
PMU name: hswep_unc_qpi0, hswep_unc_qpi1
PMU desc: Intel Haswell-EP QPI uncore PMU
The library supports the Intel Haswell Power QPI uncore PMU. This
PMU model only exists on Haswell model 63.
The following modifiers are supported on Haswell 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].
- 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
Stephane Eranian <eranian@gmail.com>