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PMC.UCF(3)		 BSD Library Functions Manual		    PMC.UCF(3)

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

LIBRARY
     Performance Counters Library (libpmc, -lpmc)

SYNOPSIS
     #include <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 func‐
     tion pmc_cpuinfo(3).

     Intel uncore fixed-function PMCs are documented in "Volume 3B: System
     Programming Guide, Part 2", Intel(R) 64 and IA-32 Architectures Software
     Developes Manual, Order Number: 253669-033US, Intel Corporation, December
     2009.

   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.tsc(3),
     pmc_cpuinfo(3), pmclog(3), hwpmc(4)

HISTORY
     The pmc library first appeared in FreeBSD 6.0.

AUTHORS
     The Performance Counters Library (libpmc, -lpmc) library was written by
     Joseph Koshy ⟨jkoshy@FreeBSD.org⟩.

BSD				March 30, 2010				   BSD
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