libpfm_intel_icx_unc_pcu - support for Intel IcelakeX Server PCU
uncore PMU
#include <perfmon/pfmlib.h>
PMU name: icx_unc_pcu
PMU desc: Intel IcelakeX PCU uncore PMU
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.
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.
Stephane Eranian <eranian@gmail.com>