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freebsd-skq/lib/libpmc/pmc.soft.3

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Add software PMC support. New kernel events can be added at various location for sampling or counting. This will for example allow easy system profiling whatever the processor is with known tools like pmcstat(8). Simultaneous usage of software PMC and hardware PMC is possible, for example looking at the lock acquire failure, page fault while sampling on instructions. Sponsored by: NETASQ MFC after: 1 month
2012-03-28 20:58:30 +00:00
.\" Copyright (c) 2012 Fabien Thomas. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
Add support for good old 8192Hz profiling clock to software PMC. Reviewed by: fabient
2013-02-26 18:13:42 +00:00
.Dd February 26, 2013
Add software PMC support. New kernel events can be added at various location for sampling or counting. This will for example allow easy system profiling whatever the processor is with known tools like pmcstat(8). Simultaneous usage of software PMC and hardware PMC is possible, for example looking at the lock acquire failure, page fault while sampling on instructions. Sponsored by: NETASQ MFC after: 1 month
2012-03-28 20:58:30 +00:00
.Dt PMC.SOFT 3
mdoc: sort prologue macros.
2012-03-29 06:19:00 +00:00
.Os
Add software PMC support. New kernel events can be added at various location for sampling or counting. This will for example allow easy system profiling whatever the processor is with known tools like pmcstat(8). Simultaneous usage of software PMC and hardware PMC is possible, for example looking at the lock acquire failure, page fault while sampling on instructions. Sponsored by: NETASQ MFC after: 1 month
2012-03-28 20:58:30 +00:00
.Sh NAME
.Nm pmc.soft
.Nd measurements using software based events
.Sh LIBRARY
.Lb libpmc
.Sh SYNOPSIS
.In pmc.h
.Sh DESCRIPTION
Software events are used to collect various source of software events.
.Ss PMC Features
16 sampling counters using software events based on various sources.
These PMCs support the following capabilities:
.Bl -column "PMC_CAP_INTERRUPT" "Support"
.It Em Capability Ta Em Support
.It PMC_CAP_CASCADE Ta \&No
.It PMC_CAP_EDGE Ta \&No
.It PMC_CAP_INTERRUPT Ta Yes
.It PMC_CAP_INVERT Ta \&No
.It PMC_CAP_READ Ta Yes
.It PMC_CAP_PRECISE Ta \&No
.It PMC_CAP_SYSTEM Ta Yes
.It PMC_CAP_TAGGING Ta \&No
.It PMC_CAP_THRESHOLD Ta \&No
.It PMC_CAP_USER Ta Yes
.It PMC_CAP_WRITE Ta Yes
.El
.Ss Event Qualifiers
There is no supported event qualifier.
.Pp
The event specifiers supported by software are:
.Bl -tag -width indent
.It Li CLOCK.HARD
Hard clock ticks.
.It Li CLOCK.STAT
Stat clock ticks.
Add support for good old 8192Hz profiling clock to software PMC. Reviewed by: fabient
2013-02-26 18:13:42 +00:00
.It Li CLOCK.PROF
Profiling clock ticks.
Add software PMC support. New kernel events can be added at various location for sampling or counting. This will for example allow easy system profiling whatever the processor is with known tools like pmcstat(8). Simultaneous usage of software PMC and hardware PMC is possible, for example looking at the lock acquire failure, page fault while sampling on instructions. Sponsored by: NETASQ MFC after: 1 month
2012-03-28 20:58:30 +00:00
.It Li LOCK.FAILED
Lock acquisition failed.
.It Li PAGE_FAULT.ALL
All page fault type.
.It Li PAGE_FAULT.READ
Read page fault.
.It Li PAGE_FAULT.WRITE
Write page fault.
.El
.Sh SEE ALSO
.Xr pmc 3 ,
.Xr pmc.atom 3 ,
.Xr pmc.core 3 ,
mdoc: sort SEE ALSO.
2015-01-04 12:38:00 +00:00
.Xr pmc.corei7 3 ,
.Xr pmc.corei7uc 3 ,
Add software PMC support. New kernel events can be added at various location for sampling or counting. This will for example allow easy system profiling whatever the processor is with known tools like pmcstat(8). Simultaneous usage of software PMC and hardware PMC is possible, for example looking at the lock acquire failure, page fault while sampling on instructions. Sponsored by: NETASQ MFC after: 1 month
2012-03-28 20:58:30 +00:00
.Xr pmc.iaf 3 ,
.Xr pmc.k7 3 ,
.Xr pmc.k8 3 ,
.Xr pmc.p4 3 ,
.Xr pmc.p5 3 ,
.Xr pmc.p6 3 ,
.Xr pmc.tsc 3 ,
mdoc: sort SEE ALSO.
2015-01-04 12:38:00 +00:00
.Xr pmc.ucf 3 ,
.Xr pmc.westmereuc 3 ,
Add software PMC support. New kernel events can be added at various location for sampling or counting. This will for example allow easy system profiling whatever the processor is with known tools like pmcstat(8). Simultaneous usage of software PMC and hardware PMC is possible, for example looking at the lock acquire failure, page fault while sampling on instructions. Sponsored by: NETASQ MFC after: 1 month
2012-03-28 20:58:30 +00:00
.Xr pmc_cpuinfo 3 ,
.Xr pmclog 3 ,
.Xr hwpmc 4
.Sh HISTORY
The
.Nm pmc
library first appeared in
.Fx 6.0 .
.Sh AUTHORS
use .Mt to mark up email addresses consistently (part3) PR: 191174 Submitted by: Franco Fichtner <franco at lastsummer.de>
2014-06-23 08:23:05 +00:00
.An -nosplit
Add software PMC support. New kernel events can be added at various location for sampling or counting. This will for example allow easy system profiling whatever the processor is with known tools like pmcstat(8). Simultaneous usage of software PMC and hardware PMC is possible, for example looking at the lock acquire failure, page fault while sampling on instructions. Sponsored by: NETASQ MFC after: 1 month
2012-03-28 20:58:30 +00:00
The
.Lb libpmc
library was written by
use .Mt to mark up email addresses consistently (part3) PR: 191174 Submitted by: Franco Fichtner <franco at lastsummer.de>
2014-06-23 08:23:05 +00:00
.An Joseph Koshy Aq Mt jkoshy@FreeBSD.org .
Add software PMC support. New kernel events can be added at various location for sampling or counting. This will for example allow easy system profiling whatever the processor is with known tools like pmcstat(8). Simultaneous usage of software PMC and hardware PMC is possible, for example looking at the lock acquire failure, page fault while sampling on instructions. Sponsored by: NETASQ MFC after: 1 month
2012-03-28 20:58:30 +00:00
Software PMC was written by
use .Mt to mark up email addresses consistently (part3) PR: 191174 Submitted by: Franco Fichtner <franco at lastsummer.de>
2014-06-23 08:23:05 +00:00
.An Fabien Thomas Aq Mt fabient@FreeBSD.org .
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