PERF-LOCK(1)                     perf Manual                    PERF-LOCK(1)

NAME         top

       perf-lock - Analyze lock events

SYNOPSIS         top

       perf lock {record|report|script|info}

DESCRIPTION         top

       You can analyze various lock behaviours and statistics with this perf
       lock command.

           'perf lock record <command>' records lock events
           between start and end <command>. And this command
           produces the file "" which contains tracing
           results of lock events.

           'perf lock report' reports statistical data.

           'perf lock script' shows raw lock events.

           'perf lock info' shows metadata like threads or addresses
           of lock instances.

COMMON OPTIONS         top

       -i, --input=<file>
           Input file name. (default: unless stdin is a fifo)

       -v, --verbose
           Be more verbose (show symbol address, etc).

       -D, --dump-raw-trace
           Dump raw trace in ASCII.

       -f, --force
           Don’t complan, do it.

REPORT OPTIONS         top

       -k, --key=<value>
           Sorting key. Possible values: acquired (default), contended,
           avg_wait, wait_total, wait_max, wait_min.

INFO OPTIONS         top

       -t, --threads
           dump thread list in

       -m, --map
           dump map of lock instances (address:name table)

SEE ALSO         top


COLOPHON         top

       This page is part of the perf (Performance analysis tools for Linux
       (in Linux source tree)) project.  Information about the project can
       be found at ⟨⟩.  If
       you have a bug report for this manual page, send it to  This page was obtained from the
       project's upstream Git repository
       ⟨⟩ on
       2019-03-06.  (At that time, the date of the most recent commit that
       was found in the repository was 2019-03-05.)  If you discover any
       rendering problems in this HTML version of the page, or you believe
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       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

perf                             01/30/2018                     PERF-LOCK(1)