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NAME | SYNOPSIS | DESCRIPTION | MODIFIERS | AUTHORS | COLOPHON |
LIBPFM(3) Linux Programmer's Manual LIBPFM(3)
libpfm_intel_hswep_unc_qpi - support for Intel Haswell-EP QPI uncore
PMU
#include <perfmon/pfmlib.h>
PMU name: hswep_unc_qpi0, hswep_unc_qpi1
PMU desc: Intel Haswell-EP QPI uncore PMU
The library supports the Intel Haswell Power QPI uncore PMU. This
PMU model only exists on Haswell model 63.
The following modifiers are supported on Haswell Bridge QPI 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
Stephane Eranian <eranian@gmail.com>
This page is part of the perfmon2 (a performance monitoring library)
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⟨http://perfmon2.sourceforge.net/⟩. If you have a bug report for this
manual page, send it to perfmon2-devel@lists.sourceforge.net. This
page was obtained from the project's upstream Git repository
⟨git://git.code.sf.net/p/perfmon2/libpfm4⟩ on 2017-07-05. If you dis‐
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COLOPHON (which is not part of the original manual page), send a mail
to man-pages@man7.org
May , 2015 LIBPFM(3)