trace-cmd-split(1)

NAME

   trace-cmd-split - split a trace.dat file into smaller files

SYNOPSIS

   trace-cmd split [OPTIONS] [start-time [end-time]]

DESCRIPTION

   The trace-cmd(1) split is used to break up a trace.dat into small
   files. The start-time specifies where the new file will start at. Using
   trace-cmd-report(1) and copying the time stamp given at a particular
   event, can be used as input for either start-time or end-time. The
   split will stop creating files when it reaches an event after end-time.
   If only the end-time is needed, use 0.0 as the start-time.

   If start-time is left out, then the split will start at the beginning
   of the file. If end-time is left out, then split will continue to the
   end unless it meets one of the requirements specified by the options.

OPTIONS

   -i file
       If this option is not specified, then the split command will look
       for the file named trace.dat. This options will allow the reading
       of another file other than trace.dat.

   -o file
       By default, the split command will use the input file name as a
       basis of where to write the split files. The output file will be
       the input file with an attached '.#\' to the end: trace.dat.1,
       trace.dat.2, etc.

           This option will change the name of the base file used.

           -o file  will create file.1, file.2, etc.

   -s seconds
       This specifies how many seconds should be recorded before the new
       file should stop.

   -m milliseconds
       This specifies how many milliseconds should be recorded before the
       new file should stop.

   -u microseconds
       This specifies how many microseconds should be recorded before the
       new file should stop.

   -e events
       This specifies how many events should be recorded before the new
       file should stop.

   -p pages
       This specifies the number of pages that should be recorded before
       the new file should stop.

           Note: only one of *-p*, *-e*, *-u*, *-m*, *-s* may be specified at a time.

           If *-p* is specified, then *-c* is automatically set.

   -r
       This option causes the break up to repeat until end-time is reached
       (or end of the input if end-time is not specified).

           trace-cmd split -r -e 10000

           This will break up trace.dat into several smaller files, each with at most
           10,000 events in it.

   -c
       This option causes the above break up to be per CPU.

           trace-cmd split -c -p 10

           This will create a file that has 10 pages per each CPU from the input.

   -C cpu
       This option will split for a single CPU. Only the cpu named will be
       extracted from the file.

           trace-cmd split -C 1

           This will split out all the events for cpu 1 in the file.

SEE ALSO

   trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1),
   trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1),
   trace-cmd-reset(1), trace-cmd-list(1), trace-cmd-listen(1)

AUTHOR

   Written by Steven Rostedt, <[email protected][1]>

RESOURCES

   git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git

COPYING

   Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted
   under the terms of the GNU Public License (GPL).

NOTES

    1. [email protected]
       mailto:[email protected]

                              07/17/2016                TRACE-CMD-SPLIT(1)

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