.TH j_flowtime.d 1m "$Date: 2015/09/30 22:01:09 $" "USER COMMANDS" .SH NAME j_flowtime.d - snoop Java execution with method flow and delta times. .SH SYNOPSIS .B j_flowtime.d .SH DESCRIPTION This traces activity from all Java processes on the system with hotspot provider support (1.6.0) and the flag "+ExtendedDTraceProbes". eg, java -XX:+ExtendedDTraceProbes classfile This watches Java method entries and returns, and indents child method calls. .SH OS Solaris .SH STABILITY Evolving - uses the DTrace hotspot provider, which may change as additional features are introduced. Check Java/Readme to see what version these scripts are based on. .SH EXAMPLES .TP Default output, # .B j_flowtime.d .PP .SH FIELDS .TP C CPU-id .TP PID Process ID .TP TID Thread ID .TP TIME(us) Time since boot (us) .TP DELTA(us) Elapsed time from previous line to this line .TP CLASS.METHOD Java class and method name .SH LEGEND .TP \-> method entry .TP <\- method return .SH WARNING Watch the first column carefully, it prints the CPU-id. If it changes, then it is very likely that the output has been shuffled. Changes in TID will appear to shuffle output, as we change from one thread depth to the next. See Docs/Notes/ALLjavaflow.txt for additional notes. .PP .SH DOCUMENTATION See the DTraceToolkit for further documentation under the Examples, Notes and Docs directories. The example files may be especially useful as they aim to demonstrate how to interpret the output. .SH EXIT j_flowtime.d will run until Ctrl-C is hit. .SH AUTHOR Brendan Gregg [CA, USA] .SH SEE ALSO dtrace(1M) |