doc/examples/demo-tracef/README

   1 This is a demo application showing how to trace formatted strings into
   2 LTTng-UST.
   3
   4 The simplest command to trace the demo program are:
   5
   6 lttng create
   7 lttng enable-event -u "lttng_ust_tracef:event"
   8 lttng start
   9 ./demo-tracef
  10 lttng stop
  11 lttng view
  12 lttng destroy
  13
  14 The resulting lttng view output should look like this:
  15
  16 [07:32:02.021045683] (+?.?????????) thinkos lttng_ust:tracef: { cpu_id = 2 }, { _msg_length = 46, msg = "This is a "mystring test" formatted 0 event 42" }
  17 [07:32:02.021062328] (+0.000016645) thinkos lttng_ust:tracef: { cpu_id = 2 }, { _msg_length = 46, msg = "This is a "mystring test" formatted 1 event 42" }
  18 [07:32:02.021066300] (+0.000003972) thinkos lttng_ust:tracef: { cpu_id = 2 }, { _msg_length = 46, msg = "This is a "mystring test" formatted 2 event 42" }
  19 [07:32:02.021069507] (+0.000003207) thinkos lttng_ust:tracef: { cpu_id = 2 }, { _msg_length = 46, msg = "This is a "mystring test" formatted 3 event 42" }
  20 [07:32:02.021072541] (+0.000003034) thinkos lttng_ust:tracef: { cpu_id = 2 }, { _msg_length = 46, msg = "This is a "mystring test" formatted 4 event 42" }