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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | AUTHOR | RESOURCES | COPYING | NOTES | COLOPHON |
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TRACE-CMD-SPLIT(1) libtracefs Manual TRACE-CMD-SPLIT(1)
trace-cmd-split - split a trace.dat file into smaller files
trace-cmd split [OPTIONS] [start-time [end-time]]
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.
-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.
--top
This allows to keep the top buffer. The top buffer can be
renamed using the -b option.
trace-cmd split --top
This will keep only the top buffer.
trace-cmd split --top -b old_top
This will keep only the top buffer and rename it 'old_top'.
-B buffer
This allows to keep the selected buffer. A buffer can be
promoted to the top buffer using the -t option.
trace-cmd split -B timer -B sched
This will keep the 'timer' and 'sched' buffers.
trace-cmd split -B timer -t -B sched
This will keep the 'timer' and 'sched' buffers, with the events
from the 'timer' buffer promoted to the top instance.
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)
Written by Steven Rostedt, <rostedt@goodmis.org[1]>
https://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git/
Copyright (C) 2010 Red Hat, Inc. Free use of this software is
granted under the terms of the GNU Public License (GPL).
1. rostedt@goodmis.org
mailto:rostedt@goodmis.org
This page is part of the trace-cmd (a front-end for Ftrace)
project. Information about the project can be found at
⟨https://www.trace-cmd.org/⟩. If you have a bug report for this
manual page, see ⟨https://www.trace-cmd.org/⟩. This page was
obtained from the project's upstream Git repository
⟨https://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git⟩ on
2024-06-14. (At that time, the date of the most recent commit
that was found in the repository was 2024-02-22.) If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to man-pages@man7.org
libtracefs 06/13/2024 TRACE-CMD-SPLIT(1)
Pages that refer to this page: trace-cmd(1), trace-cmd-agent(1), trace-cmd-attach(1), trace-cmd-check-events(1), trace-cmd-clear(1), trace-cmd-extract(1), trace-cmd-hist(1), trace-cmd-list(1), trace-cmd-listen(1), trace-cmd-mem(1), trace-cmd-options(1), trace-cmd-profile(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-reset(1), trace-cmd-restore(1), trace-cmd-set(1), trace-cmd-show(1), trace-cmd-snapshot(1), trace-cmd-stack(1), trace-cmd-start(1), trace-cmd-stat(1), trace-cmd-stop(1), trace-cmd-stream(1), trace-cmd.dat.v6(5), trace-cmd.dat.v7(5)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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