Section 8 · System administration

bcc-tplist.8

Package: bcc-tools

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tplist

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLES
SOURCE
OS
STABILITY
AUTHOR

NAME

tplist − Display kernel tracepoints or USDT probes and their formats.

SYNOPSIS

tplist [-p PID] [-l LIB] [-v] [filter]

DESCRIPTION

tplist lists all kernel tracepoints, and can optionally print out the tracepoint format; namely, the variables that you can trace when the tracepoint is hit. tplist can also list USDT probes embedded in a specific library or executable, and can list USDT probes for all the libraries loaded by a specific process. These features are usually used in conjunction with the argdist and/or trace tools.

On a typical system, accessing the tracepoint list and format requires root. However, accessing USDT probes does not require root.

OPTIONS


	−p PID		Display the USDT probes from all the libraries loaded by the specified process.
	−l LIB		Display the USDT probes from the specified library or executable. If the librar or executable can be found in the standard paths, a full path is not required.
	−v		Increase the verbosity level. Can be used to display the variables, locations, and arguments of tracepoints and USDT probes.

[filter]

A wildcard expression that specifies which tracepoints or probes to print. For example, block:* will print all block tracepoints (block:block_rq_complete, etc.). Regular expressions are not supported.

EXAMPLES

Print all kernel tracepoints:

tplist

Print all net tracepoints with their format:

**tplist -v ’net:*’**

Print all USDT probes in libpthread:

$ tplist -l pthread

Print all USDT probes in process 4717 from the libc provider:

$ tplist -p 4717 ’libc:*’

Print all the USDT probes in the node executable:

$ tplist -l node

SOURCE

This is from bcc.

https://github.com/iovisor/bcc

OS

Linux

STABILITY

Unstable - in development.

AUTHOR

Sasha Goldshtein