projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| 30ec772c PP |
1 | lttng-start(1) |
| 2 | ============== | |
| 484b2a0c | 3 | :revdate: 21 April 2021 |
| 30ec772c PP |
4 | |
| 5 | ||
| 6 | NAME | |
| 7 | ---- | |
| 484b2a0c | 8 | lttng-start - Start an LTTng tracing session |
| 30ec772c PP |
9 | |
| 10 | ||
| 11 | SYNOPSIS | |
| 12 | -------- | |
| 13 | [verse] | |
| ce19b9ed | 14 | *lttng* ['linkgenoptions:(GENERAL OPTIONS)'] *start* ['SESSION'] |
| 30ec772c PP |
15 | |
| 16 | ||
| 17 | DESCRIPTION | |
| 18 | ----------- | |
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19 | The `lttng start` command starts a tracing session, that is, it |
| 20 | activates the LTTng tracers for: | |
| 30ec772c | 21 | |
| 484b2a0c PP |
22 | With the 'SESSION' argument:: |
| 23 | The tracing session named 'SESSION'. | |
| 30ec772c | 24 | |
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25 | Without the 'SESSION' argument:: |
| 26 | The current tracing session (see man:lttng-create(1) and | |
| 27 | man:lttng-set-session(1) to learn more about the current tracing | |
| 28 | session). | |
| 30ec772c | 29 | |
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30 | The selected tracing session must be inactive (stopped). A tracing |
| 31 | session is inactive on creation (see man:lttng-create(1)). | |
| 32 | ||
| 33 | An active tracing session is an implicit recording event rule condition | |
| 34 | (see man:lttng-enable-event(1)). In other words, a recording event rule | |
| 35 | cannot match an event when its tracing session is inactive. | |
| 36 | ||
| 37 | A `start-session` trigger action can also start a tracing session | |
| 38 | (see man:lttng-add-trigger(1)). | |
| 39 | ||
| 40 | Stop an active tracing session with the man:lttng-stop(1) command. | |
| 30ec772c PP |
41 | |
| 42 | ||
| 43 | include::common-cmd-options-head.txt[] | |
| 44 | ||
| 45 | ||
| 46 | include::common-cmd-help-options.txt[] | |
| 47 | ||
| 48 | ||
| 49 | include::common-cmd-footer.txt[] | |
| 50 | ||
| 51 | ||
| 52 | SEE ALSO | |
| 53 | -------- | |
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54 | man:lttng(1), |
| 55 | man:lttng-add-trigger(1), | |
| 56 | man:lttng-create(1), | |
| 57 | man:lttng-enable-event(1), | |
| 58 | man:lttng-stop(1) |