66 lines
3.4 KiB
Groff
66 lines
3.4 KiB
Groff
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.\" Copyright (c) 2015
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.\" Netflix Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd Dec 2, 2014
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.Dt PMC_COUNTER_STUDY 1
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.Os
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.Sh NAME
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.Nm pmc_counter_study
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.Nd Perform various study's on a systems overall PMC's.
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.Sh SYNOPSIS
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.Nm
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.Sh DESCRIPTION
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The
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.Nm
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The pmc_counter_study program is designed to run various tests against
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your systems performance. There are roughly 20-22 canned tests that
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setup specific PMC's and then run various formulas on the output information.
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These formulas can be found in Intel documentation "Using Intel Vtune
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amplifier xe on NNN Generation Intel Core Processors". The NNN is either
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2nd, 3rd or 4th generation i.e. Sandy Bridge, Ivy Bridge and Haswell.
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Currently the program only works on these three Intel processor types.
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You can see the complete list of formula's by running the program
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with the -H option. If you know a formula name you can run it by
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typing -e name. If you know a name and want what the formula is you
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can run the program with -e name -h and the program will not run but
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it will tell you what that name will do (if known). The -T option can
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be used to test all PMC's that are known to your system. When running a
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test you will want to specify -m N where N is the number of 1 second samples
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to collect and analize (it bounds the time the test runs). Finally for
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those that have there own ideas on what formulas that you want to run
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you can type your own formula in with -E "formula". The formula can
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declare directly the PMC's by name or you can use an abbreviation
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%NNN. To find out the abbreviations on your system you may run
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pmc_counter_study -L and it will tell you each PMC name and the
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abbreviation you can use. An example of a formula of your own might
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be -E "FP_ASSIST.ANY / INST_RETIRED.ANY_P" <or short hand on Haswell>
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-E " %176 / %150". You must have spaces between each entry and
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you may use paraenthisis to prioritize the operators. Add (+), Subtract (-1),
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Divide (/) and Multiplication (*) is supported. You may also introduce
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constant numbers as well. So for example you can do a standard efficency
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test like -E "UOPS_RETIRED.RETIRE_SLOTS / (4 * CPU_CLK_UNHALTED.THREAD_P)".
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