записать трассировку с внутреннего трассировщика Ftrace Linux (record a trace from the Ftrace Linux internal tracer)
Описание (Description)
The trace-cmd(1) record command will set up the Ftrace Linux
kernel tracer to record the specified plugins or events that
happen while the command executes. If no command is given, then
it will record until the user hits Ctrl-C.
The record command of trace-cmd will set up the Ftrace tracer to
start tracing the various events or plugins that are given on the
command line. It will then create a number of tracing processes
(one per CPU) that will start recording from the kernel ring
buffer straight into temporary files. When the command is
complete (or Ctrl-C is hit) all the files will be combined into a
trace.dat file that can later be read (see trace-cmd-report(1)).
