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Man Pages


Manual Reference Pages  -  PMC.UCF (3)

NAME

pmc.ucf - measurement events for Intel uncore fixed function performance counters.

CONTENTS

Library
Synopsis
Description
     PMC Capabilities
     Class Name Prefix
     Event Specifiers (Fixed Function PMCs)
See Also
History
Authors

LIBRARY


.Lb libpmc

SYNOPSIS


.In pmc.h

DESCRIPTION

Each fixed-function PMC measures a specific hardware event. The number of fixed-function PMCs implemented in a CPU can vary. The number of fixed-function PMCs present can be determined at runtime by using function pmc_cpuinfo(3).

Intel uncore fixed-function PMCs are documented in
.Rs Volume 3B: System Programming Guide, Part 2
.Re

    PMC Capabilities

Fixed-function PMCs support the following capabilities:
Capability      Support
PMC_CAP_CASCADE      No
PMC_CAP_EDGE      No
PMC_CAP_INTERRUPT      No
PMC_CAP_INVERT      No
PMC_CAP_READ      Yes
PMC_CAP_PRECISE      No
PMC_CAP_SYSTEM      No
PMC_CAP_TAGGING      No
PMC_CAP_THRESHOLD      No
PMC_CAP_USER      No
PMC_CAP_WRITE      Yes
 

    Class Name Prefix

These PMCs are named using a class name prefix of "ucf-".

    Event Specifiers (Fixed Function PMCs)

The fixed function PMCs are selectable using the following event names:
UCLOCK
  (Fixed Function Counter 0) The fixed-function uncore counter increments at the rate of the U-clock. The frequency of the uncore clock domain can be determined from the uncore clock ratio which is available in the PCI configuration space register at offset C0H under device number 0 and Function 0.

SEE ALSO

pmc(3), pmc.atom(3), pmc.core(3), pmc.core2(3), pmc.iaf(3), pmc.k7(3), pmc.k8(3), pmc.p4(3), pmc.p5(3), pmc.p6(3), pmc.corei7(3), pmc.corei7uc(3), pmc.westmere(3), pmc.westmereuc(3), pmc.soft(3), pmc.tsc(3), pmc_cpuinfo(3), pmclog(3), hwpmc(4)

HISTORY

The pmc library first appeared in
.Fx 6.0 .

AUTHORS

The
.Lb libpmc library was written by
.An Joseph Koshy <jkoshy@FreeBSD.org>.
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