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pmccontrol (8)
  • >> pmccontrol (8) ( FreeBSD man: Команды системного администрирования )

  • BSD mandoc
     

    NAME

    pmccontrol
    
     - control hardware performance monitoring counters
    
     
    

    SYNOPSIS

    [-c cpu | -d pmc | -e pmc ...]
    -l
    -L
    -s  

    DESCRIPTION

    The utility controls the operation of the system's hardware performance monitoring counters.  

    OPTIONS

    The utility processes options in command line order, so later options modify the effect of earlier ones. The following options are available:

    -c cpu
    Subsequent enable and disable options affect the CPU denoted by cpu The argument cpu is either a number denoting a CPU number in the system, or the string ``* '' denoting all CPUs in the system.
    -d pmc
    Disable PMC number pmc on the CPU specified by -c preventing it from being used till subsequently re-enabled. The argument pmc is either a number denoting a specified PMC, or the string ``* '' denoting all the PMCs on the specified CPU.

    Only idle PMCs may be disabled.

    -e pmc
    Enable PMC number pmc on the CPU specified by -c allowing it to be used in the future. The argument pmc is either a number denoting a specified PMC, or the string ``* '' denoting all the PMCs on the specified CPU. If PMC pmc is already enabled, this option has no effect.
    -l
    List available hardware performance counters and their current disposition.
    -L
    List available hardware performance counter classes and their supported event names.
    -s
    Print driver statistics maintained by hwpmc(4).

     

    EXAMPLES

    To disable all PMCs on all CPUs, use the command:
    "pmccontrol -d*"

    To enable all PMCs on all CPUs, use:

    "pmccontrol -e*"

    To disable PMCs 0 and 1 on CPU 2, use:

    "pmccontrol -c2 -d0 -d1"

    To disable PMC 0 of CPU 0 only, and enable all other PMCS on all other CPUs, use:

    "pmccontrol -c* -e* -c0 -d0"
     

    DIAGNOSTICS

    Ex -std  

    SEE ALSO

    pmc(3), pmclog(3), hwpmc(4), pmcstat(8), sysctl(8)  

    HISTORY

    The utility first appeared in Fx 6.0 .  

    AUTHORS

    An Joseph Koshy Aq [email protected]


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    OPTIONS
    EXAMPLES
    DIAGNOSTICS
    SEE ALSO
    HISTORY
    AUTHORS


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