NAME
trace-cmd-split - split a trace.dat file into smaller filesSYNOPSIS
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.OPTIONS
-i fileIf 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.
-s seconds
This option will change the name of the base file used.
-o file will create file.1, file.2, etc.
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.
-r
Note: only one of *-p*, *-e*, *-u*, *-m*, *-s* may be specified at a time.
If *-p* is specified, then *-c* is automatically set.
This option causes the break up to repeat
until end-time is reached (or end of the input if end-time is not specified).
-c
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.
This option causes the above break up to be
per CPU.
-C cpu
trace-cmd split -c -p 10
This will create a file that has 10 pages per each CPU from the input.
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
https://git.kernel.org/pub/scm/utils/trace-cmd/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
mailto:[email protected]
01/22/2023 | libtracefs |