TRACE−CMD−SPLIT - Online Linux Manual PageSection : 1
Updated : 03/29/2021
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NAMEtrace-cmd-split − split a trace​.dat file into smaller files
SYNOPSIStrace−cmd split [OPTIONS] [start−time [end−time]]
DESCRIPTIONThe 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 10000This 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 10This 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 1This will split out all the events for cpu 1 in the file​.
SEE ALSOtrace−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)
AUTHORWritten by Steven Rostedt, <rostedt@goodmis​.org​[1]>
RESOURCEShttps://git​.kernel​.org/pub/scm/utils/trace−cmd/trace−cmd​.git/
COPYINGCopyright (C) 2010 Red Hat, Inc​. Free use of this software is granted under the terms of the GNU Public License (GPL)​.
NOTES 1. rostedt@goodmis.org ­mailto:rostedt@goodmis.org 0
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