LIBPFM - Online Linux Manual PageSection : 3
Updated : June, 2017
Source :
Note : Linux Programmer's Manual
NAMElibpfm_intel_bdx_unc_ha - support for Intel Broadwell Server Home Agent (HA) uncore PMU
SYNOPSIS#include <perfmon/pfmlib.h>
PMU name: bdx_unc_ha0, bdx_unc_ha1
PMU desc: Intel Broadwell Server HA uncore PMU
DESCRIPTION
The library supports the Intel Broadwell Server Home Agent (HA) uncore PMU. This PMU model only exists on various Broadwell models (79, 86).
MODIFIERSThe following modifiers are supported on Intel Broadwell server HA 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 HA 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
AUTHORSStephane Eranian <eranian@gmail.com>
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Johanes Gumabo
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