.TH j_calltime.d 1m "$Date: 2015/09/30 22:01:09 $" "USER COMMANDS" .SH NAME j_calltime.d - measure Java elapsed times for different types of operation. .SH SYNOPSIS .B j_calltime.d [top] .SH DESCRIPTION This traces activity from all Java processes on the system with hotspot provider support (1.6.0). Method calls are only visible when using the flag "+ExtendedDTraceProbes". eg, java -XX:+ExtendedDTraceProbes classfile The "top" optional argument will truncate the output for each report section to that many lines, with a default of 10. .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_calltime.d .PP .SH FIELDS .TP PID Process ID .TP TYPE Type of call (method/gc/total) .TP NAME Name of call .TP TOTAL Total elapsed time for calls (us) .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_calltime.d will run until Ctrl-C is hit. .SH AUTHOR Brendan Gregg [CA, USA] .SH SEE ALSO dtrace(1M) |