lttctl1

Usage

Overview

lttctl is a small program that controls LTTng through liblttctl.

Options

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-h, --help: Show summary of options.

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-c, --create: Create a trace.

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-d, --destroy: Destroy a trace.

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-s, --start: Start a trace.

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-p, --pause: Pause a trace.

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--transport TRANSPORT: Set trace's transport. (ex. relay-locked or relay)

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-o, --option OPTION Set options, following operations are supported:

channel.<channelname>.enable=
channel.<channelname>.overwrite=
channel.<channelname>.bufnum=
channel.<channelname>.bufsize= (in bytes, rounded to next power of 2)
<channelname> can be set to all for all channels
channel.<channelname>.switch_timer= (timer interval in ms)

•

-C, --create_start: Create and start a trace.

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-D, --pause_destroy: Pause and destroy a trace.

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-w, --write PATH: Path for write trace datas. For -c, -C, -d, -D options.

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-a, --append: Append to trace, For -w option.

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-n, --dump_threads NUMBER: Number of lttd threads, For -w option.

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--channel_root PATH: Set channels root path, For -w option. (ex. /mnt/debugfs/ltt)