10-09-2011
Its working on my Linux Box. I am using CentOS.
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LEARN ABOUT CENTOS
libpfm_intel_ivb_unc
LIBPFM(3) Linux Programmer's Manual LIBPFM(3)
NAME
libpfm_intel_ivb_unc - support for Intel Ivy Bridge uncore PMU
SYNOPSIS
#include <perfmon/pfmlib.h>
PMU name: ivb_unc_cbo0, ivb_unc_cbo1, ivb_unc_cbo2, ivb_unc_cbo3
PMU desc: Intel Ivy Bridge C-box uncore
DESCRIPTION
The library supports the Intel Ivy Bridge client part (model 58) uncore PMU. The support is currently limited to the Coherency Box, so
called C-Box for up to 4 physical cores.
Each physical core has an associated C-Box which it uses to communictate with the L3 cache. The C-boxes all support the same set of events.
However, Core 0 C-box (snb_unc_cbo0) supports an additional uncore clock ticks event: UNC_CLOCKTICKS.
MODIFIERS
The following modifiers are supported on Intel Ivy Bridge C-Box uncore PMU:
i Invert the meaning of the event. The counter will now count cycles in which the event is not occurring. This is a boolean modifier
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 counter mask modifier (m) with a value greater or equal to one. This is a boolean modifier.
c Set the counter mask value. The mask acts as a threshold. The counter will count the number of cycles in which the number of occur-
rences of the event is greater or equal to the threshold. This is an integer modifier with values in the range [0:255].
Both the UNC_CBO_CACHE_LOOKUP and UNC_CBO_XSNP_RESPONSE requires two umasks to be valid. For UNC_CBO_CACHE_LOOKUP the first umask must be
one of the MESI state umasks, the second has to be one of the filters. For UNC_CBO_XSNP_RESPONSE the first umask must be one of the snoop
types, the second has to be one of the filters.
AUTHORS
Stephane Eranian <eranian@gmail.com>
June, 2013 LIBPFM(3)