#### 11.1.6 Starting and Stopping Trace Experiments

`tstart`
  This command takes no arguments. It starts the trace experiment, and begins collecting data. This has the side effect of discarding all the data collected in the trace buffer during the previous trace experiment.

`tstop`
  This command takes no arguments. It ends the trace experiment, and stops collecting data.

  Note: a trace experiment and data collection may stop automatically if any tracepoint's passcount is reached (see Tracepoint Passcounts), or if the trace buffer becomes full.

`tstatus`
  This command displays the status of the current trace data collection.

Here is an example of the commands we described so far:

         (gdb) trace gdb_c_test
         (gdb) actions
         Enter actions for tracepoint #1, one per line.
         > collect $regs,$locals,$args
         > while-stepping 11
           > collect $regs
           > end
         > end
         (gdb) tstart
         	[time passes ...]
         (gdb) tstop