instance, \-C does not enable the consumer automatically. You'll need the \-e
option for that.
-\-U, \-\-set-uri=URL
+\-U, \-\-set-url=URL
Set URL for the enable-consumer destination. It is persistent for the
session lifetime. Redo the command to change it. This will set both
data and control URL for network.
.nf
Enable tracing channel
-To enable event, you must first enable a channel which contains event(s).
+To enable an event, you must enable both the event and the channel that
+contains it.
If \fB\-s, \-\-session\fP is omitted, the session name is taken from the .lttngrc
file.
Flight recorder mode : overwrites events when subbuffers are full
\-\-subbuf-size SIZE
Subbuffer size in bytes (default: 4096, kernel default: 262144)
+ Needs to be a power of 2 for both tracers
\-\-num-subbuf NUM
Number of subbuffers (default: 4)
- Needs to be a power of 2 for kernel and ust tracers
+ Needs to be a power of 2 for both tracers
\-\-switch-timer USEC
- Switch subbuffer timer interval in usec (default: 0)
- Needs to be a power of 2 for kernel and ust tracers
+ Switch subbuffer timer interval in µsec (default: 0)
\-\-read-timer USEC
- Read timer interval in usec (default: 200)
+ Read timer interval in µsec (default: 200)
\-\-output TYPE
Channel output type. Possible values: mmap, splice
.fi
instance, \-C does not enable the consumer automatically. You'll need the \-e
option for that.
-\-U, \-\-set-uri=URL
+\-U, \-\-set-url=URL
Set URL for the enable-consumer destination. It is persistent for the
session lifetime. Redo the command to change it. This will set both
data and control URL for network.
\-c, \-\-channel NAME
Apply on channel name
\-a, \-\-all
- Enable all tracepoints and syscalls
+ Enable all tracepoints and syscalls. This actually enable a single
+ wildcard event "*".
\-k, \-\-kernel
Apply for the kernel tracer
\-u, \-\-userspace
Simple listing of options
\-s, \-\-session NAME
Apply on session name
+\-a, \-\-all-events
+ Disable all events. This does NOT disable "*" but rather
+ every known events of the session.
\-k, \-\-kernel
Apply for the kernel tracer
\-u, \-\-userspace