---
name: "lttd"
section: "1"
platform: "linux"
package: "ltt-bin"
version: "0.89-05122011-1"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/lttd"
---

# lttd(1)

## NAME

**lttd** -- linux trace toolkit daemon

## SYNOPSIS

**lttd** \[*options*\]...

## DESCRIPTION

**lttd** is a simple daemon that reads a few LTTng debugfs channels and saves them in a trace on the virtual file system.

CPU hot-plugging is supported using inotify.

## OPTIONS

- **-t** directory

  Directory name of the trace to write to. It will be created.

- **-c** directory

  Root directory of the debugfs trace channels.

- **-d**

  Run in background (daemon).

- **-a**

  Append to an possibly existing trace.

- **-N**

  Number of threads to start.

- **-f**

  Dump only flight recorder channels.

- **-n**

  Dump only normal channels.

- **-v**

  Verbose mode.

## AUTHOR

**lttd** was written by Mathieu Desnoyers \<mathieu.desnoyers@efficios.com\>, Michael Sills-Lavoie \<michael.sills-lavoie@polymtl.ca\>, and Oumarou Dicko \<oumarou.dicko@polymtl.ca\>.

This manual page was written by Jon Bernard \<jbernard@debian.org\>, for the Debian project (and may be used by others).