NAME¶

libpfm_intel_icx_unc_pcu - support for Intel IcelakeX Server PCU uncore PMU

SYNOPSIS¶

#include <perfmon/pfmlib.h>

PMU name: icx_unc_pcu
PMU desc: Intel IcelakeX PCU uncore PMU

DESCRIPTION¶

The library supports the Intel IcelakeX PCU (Power Control Unit) uncore PMU. There is one PCU per system. Each PCU PMU implements 4 generic counters.

MODIFIERS¶

The following modifiers are supported on Intel IcelakeX PCU 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 IRP clockticks 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 [0:63].

i

Invert the threshold (t) test from strictly greater than to less or equal to. This is a boolean modifier.

occ_i

Invert the threshold (t) for occupancy events POWER_STATE_OCCUPANY test from strictly greater than to less or equal to. This is a boolean modifier.

occ_e

Enable edge detection for occupancy events POWER_STATE_OCCUPANCY, 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.

AUTHORS¶

Stephane Eranian <eranian@gmail.com>