NAME

j_syscalls.d - count Java methods and syscalls using DTrace.

SYNOPSIS

j_syscalls.d { -p PID | -c cmd }

DESCRIPTION

This traces Java methods if the hotspot provider exists (1.6.0) and the flag "+ExtendedDTraceProbes" is used. eg, java -XX:+ExtendedDTraceProbes classfile

OS

Solaris

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.

EXAMPLES

Default output,: # j_syscalls.d

FIELDS

PID: Process ID
TYPE: Type of call (method/syscall)
NAME: Name of call
COUNT: Number of calls during sample

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.

EXIT

j_syscalls.d will run until Ctrl-C is hit.

AUTHOR

Brendan Gregg [CA, USA]