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From clebertsuconic <>
Subject [GitHub] activemq-artemis pull request #1295: ARTEMIS-1185 Inter-Process Journal Samp...
Date Thu, 29 Jun 2017 17:49:01 GMT
Github user clebertsuconic commented on a diff in the pull request:
    --- Diff: docs/user-manual/en/ ---
    @@ -220,5 +233,115 @@ COMMANDS
                 With --bindings option, The folder used for bindings (default from
    +        perf-journal-stat
    +            Provide sampling of performance counters of a profiled journal
    +            With --separator option, The column separator, whitespace if not
    +            specified
    +            With --broker option, This would override the broker configuration
    +            from the bootstrap
    +            With --verbose option, Adds more information on the execution
    +            With --bytes option, Add bytes flushed column in the CSV output,
    +            false if not defined
    +            With --freq option, Profile at this frequency (Hz) or will use half
    +            of the configured Journal timeout
    +            With --raw-time option, Uses raw timestamps, false if not defined
    +            With --out option, Print the CSV output in a text file or stdout if
    +            not defined
    +            With --in option, The input counter file to be used to sample
    +            profiled data
    +## The `perf-journal-stat` tool
    +This CLI command allows to sample the journal performance counters events of a broker
[configured]( to emit them.
    +This sampling profiling tool shares most features of Linux's [`perf-tools`](
    +- (costantly) lightweight while profiling
    +- (negligible) no performance hit while not profiling
    +- constant and very low memory footprint (i.e. just one [OS Page](
size in total)
    +- no Network stack involved (i.e. only Inter-Process Communication)
    +- no external dependencies
    +The next simple example will illustrate how to use it, but it could be easily integrated
with Nagios or any custom toolchain.
    +### Gnuplot example
    +Run while a proper [configured]( broker is running:
    +$ ./perf-journal-stat --verbose --freq 20000 --out ~/Documents/journal_trace.csv
    --- End diff --
    The docs is great.. small mistake there.. but I'm having some issues on how to operate
this.. lets talk offline.. and update here later.

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