LIBPFM(3)                 Linux Programmer's Manual                LIBPFM(3)

NAME         top

       libpfm_amd64_k8 - support for AMD64 K8 processors

SYNOPSIS         top

       #include <perfmon/pfmlib.h>

       PMU name: amd64_k8_revb, amd64_k8_revc, amd64_k8_revd, amd64_k8_reve, amd64_k8_revf, amd64_k8_revg
       PMU desc: AMD64 K8 RevB, AMD64 K8 RevC, AMD64 K8 RevD, AMD64 K8 RevE, AMD64 K8 RevF, AMD64 K8 RevG

DESCRIPTION         top

       The library supports AMD K8 processors in both 32 and 64-bit modes.
       They correspond to processor family 15.

MODIFIERS         top

       The following modifiers are supported on AMD64 K8 processors:

       u      Measure at user level which includes privilege levels 1, 2, 3.
              This corresponds to PFM_PLM3.  This is a boolean modifier.

       k      Measure at kernel level which includes privilege level 0. This
              corresponds to PFM_PLM0.  This is a boolean modifier.

       i      Invert the meaning of the event. The counter will now count
              cycles in which the event is not occurring. This is a boolean

       e      Enable edge detection, i.e., count only when there is a state
              transition. 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
              occurrences of the event is greater or equal to the threshold.
              This is an integer modifier with values in the range [0:255].

AUTHORS         top

       Stephane Eranian <>
       Robert Richter <>

COLOPHON         top

       This page is part of the perfmon2 (a performance monitoring library)
       project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this
       manual page, send it to  This
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       ⟨git://⟩ on 2017-09-15.  If you dis‐
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       COLOPHON (which is not part of the original manual page), send a mail

                                 April, 2009                       LIBPFM(3)