NAME¶

numasched - Tracing task switch NUMA. Uses bcc/eBPF.

SYNOPSIS¶

numasched

DESCRIPTION¶

numasched tracked task switch of NUMA.

This program is also a basic example of bcc and tracepoint.

Since this uses BPF, only the root user can use this tool.

REQUIREMENTS¶

CONFIG_BPF and bcc.

OPTIONS¶

-p, --pid PID

Trace this PID only.

-t, --tid TID

Trace this TID only.

-c, --comm COMM

Trace this COMM only.

EXAMPLES¶

Tracing task switch NUMA:

# numasched

Trace PID 181 only:

# numasched -p 181

FIELDS¶

TIME

A timestamp on the output, in "HH:MM:SS" format.

PID

The process ID.

TID

The thread ID.

SRC_NID

Source NUMA ID.

DST_NID

Target NUMA ID.

COMM

The process COMM.

SOURCE¶

This is from bcc.

https://github.com/iovisor/bcc

Also look in the bcc distribution for a companion _examples.txt file containing example usage, output, and commentary for this tool.

OS¶

Linux

STABILITY¶

Unstable - in development.

AUTHOR¶

Rong Tao <rongtao@cestc.cn>

SEE ALSO¶

opensnoop(8)