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Man Pages
PMC.SOFT(3) FreeBSD Library Functions Manual PMC.SOFT(3)

pmc.soft
measurements using software based events

Performance Counters Library (libpmc, -lpmc)

#include <pmc.h>

Software events are used to collect various source of software events.

16 sampling counters using software events based on various sources. These PMCs support the following capabilities:
Capability Support
PMC_CAP_CASCADE No
PMC_CAP_EDGE No
PMC_CAP_INTERRUPT Yes
PMC_CAP_INVERT No
PMC_CAP_READ Yes
PMC_CAP_PRECISE No
PMC_CAP_SYSTEM Yes
PMC_CAP_TAGGING No
PMC_CAP_THRESHOLD No
PMC_CAP_USER Yes
PMC_CAP_WRITE Yes

There is no supported event qualifier.

The event specifiers supported by software are:

Hard clock ticks.
Stat clock ticks.
Profiling clock ticks.
Lock acquisition failed.
All page fault type.
Read page fault.
Write page fault.

pmc(3), pmc.atom(3), pmc.core(3), pmc.corei7(3), pmc.corei7uc(3), pmc.iaf(3), pmc.k7(3), pmc.k8(3), pmc.tsc(3), pmc.ucf(3), pmc.westmereuc(3), pmc_cpuinfo(3), pmclog(3), hwpmc(4)

The pmc library first appeared in FreeBSD 6.0.

The Performance Counters Library (libpmc, -lpmc) library was written by Joseph Koshy <jkoshy@FreeBSD.org>. Software PMC was written by Fabien Thomas <fabient@FreeBSD.org>.
February 26, 2013 FreeBSD 13.1-RELEASE

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