NAME¶
libpfm_intel_skx_unc_upi - support for Intel Skylake X Server UPI uncore PMU
SYNOPSIS¶
#include <perfmon/pfmlib.h>
PMU name: skx_unc_upi[0-2]
PMU desc: Intel Skylake X Server UPI uncore PMU
DESCRIPTION¶
The library supports the Intel Skylake X Server UPI uncore PMU.
MODIFIERS¶
The following modifiers are supported on Intel Skylake X server UPI 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
BASIC_HDR_MATCH events¶
The library also supports the special RXL_BASIC_HDR_MATCH and
TXL_BASIC_HDR_MATCH opcode matcher events. These events have a lot more
filters available in the form of either a modifier (listed below) or specific
umasks. The following modifiers are available in additional to the standard
listed above:
- rcsnid
- Specify a RCS Node identifier as an integer in the range [0-15]. Default:
0
- dnid
- Specify a destination Node identifier as an integer in the range [0-15].
Default: 0
AUTHORS¶
Stephane Eranian <eranian@gmail.com>
