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STCPY.md

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stcpy command

This command allow manipulation of thread dump file content. E.g. lumping multiple files to one or filtering content.

Command accepts all supported formats but output is always SJK binary dump file.

Supported input formats are

  • native SJK super comressed binary format produced by stcap command
  • VisualVM thread sampler snapshot files
  • Java Flight Recorder recordings
  • jstack thread dumps

Usage

> java -jar sjk.jar --help stcpy
[Stack Copy] Stack dump copy/filtering utility
Usage: stcpy [options]
  Options:
		--commands
	   
	   Default: false
	-e, --empty
	   Retain threads without stack trace in dump (ignored by default)
	   Default: false
		--help
	   
	   Default: false
  * -i, --input
	   Input files
	   Default: []
		--mask
	   One or more masking rules. E.g. com.mycompany:com.somecomplany
	   Default: []
  * -o, --output
	   Name of file to write thread dump
		--parsers-info
	   Print parsers available in classpath
	   Default: false
	-ss, --subsample
	   If below 1.0 some frames will be randomly throwen away. E.g. 0.1 - every
	   10th will be retained
	   Default: 1.0
	-tn, --thread-name
	   Thread name filter (Java RegEx syntax)
	-tr, --time-range
	   Time range filter
	-tz, --time-zone
	   Time zone used for timestamps and time ranges
	   Default: UTC
	-tf, --trace-filter
	   Apply filter to traces before processing. Use --ssa-help for more details
	   about filter notation
	-tt, --trace-trim
	   Positional filter trim frames to process. Use --ssa-help for more details
	   about filter notation
	-X, --verbose
	   Enable detailed diagnostics
	   Default: false