| | 1 | lttng-stop(1) |
| | 2 | ============= |
| | 3 | :revdate: 18 January 2018 |
| | 4 | |
| | 5 | |
| | 6 | NAME |
| | 7 | ---- |
| | 8 | lttng-stop - Stop LTTng tracers |
| | 9 | |
| | 10 | |
| | 11 | SYNOPSIS |
| | 12 | -------- |
| | 13 | [verse] |
| | 14 | *lttng* ['linkgenoptions:(GENERAL OPTIONS)'] *stop* [option:--no-wait] ['SESSION'] |
| | 15 | |
| | 16 | |
| | 17 | DESCRIPTION |
| | 18 | ----------- |
| | 19 | The `lttng stop` command stops the various LTTng tracers for a given |
| | 20 | active tracing session. |
| | 21 | |
| | 22 | Stopping the LTTng tracers has the effect that all enabled event rules |
| | 23 | within enabled channels cannot make event sources _emit_ trace events |
| | 24 | anymore. |
| | 25 | |
| | 26 | A tracing session with no running tracers is said to be _inactive_. |
| | 27 | Inactive tracing sessions can be set active using the |
| | 28 | man:lttng-start(1) command. |
| | 29 | |
| | 30 | If 'SESSION' is omitted, the LTTng tracers are stopped for the current |
| | 31 | tracing session (see man:lttng-create(1) for more information |
| | 32 | about the current tracing session). Otherwise, they are stopped for the |
| | 33 | existing tracing session named 'SESSION'. `lttng list` |
| | 34 | outputs all the existing tracing sessions (see man:lttng-list(1)). |
| | 35 | |
| | 36 | By default, the `lttng stop` command ensures that the tracing session's |
| | 37 | trace data is valid before returning to the prompt. With the |
| | 38 | option:--no-wait option, the command finishes immediately, hence a local |
| | 39 | trace might not be valid when the command is done. In this case, there |
| | 40 | is no way to know when the trace becomes valid. |
| | 41 | |
| | 42 | If at least one rotation occurred during the chosen tracing session's |
| | 43 | lifetime (see man:lttng-rotate(1) and man:lttng-enable-rotation(1)), the |
| | 44 | `lttng stop` command renames the current trace chunk subdirectory and |
| | 45 | prints the renamed path. Although it is safe to read the content of this |
| | 46 | renamed subdirectory while the tracing session remains inactive (until |
| | 47 | the next man:lttng-start(1)), it is :not: a trace chunk archive: you |
| | 48 | need to destroy the tracing session with man:lttng-destroy(1) or make |
| | 49 | a rotation with man:lttng-rotate(1) to archive it. |
| | 50 | |
| | 51 | |
| | 52 | include::common-cmd-options-head.txt[] |
| | 53 | |
| | 54 | |
| | 55 | option:-n, option:--no-wait:: |
| | 56 | Do not ensure that the chosen tracing session's trace data is valid |
| | 57 | before returning to the prompt. |
| | 58 | |
| | 59 | |
| | 60 | include::common-cmd-help-options.txt[] |
| | 61 | |
| | 62 | |
| | 63 | include::common-cmd-footer.txt[] |
| | 64 | |
| | 65 | |
| | 66 | SEE ALSO |
| | 67 | -------- |
| | 68 | man:lttng-start(1), |
| | 69 | man:lttng(1) |
projects / lttng-tools.git / blame_incremental