+* ``--trace=<regex-match>``
+
+ Enable trace based on regular expression trace name. By default, the trace is
+ disabled. User must specify this option to enable trace.
+ For example:
+
+ Global trace configuration for EAL only::
+
+ --trace=eal
+
+ Global trace configuration for ALL the components::
+
+ --trace=.*
+
+ Can be specified multiple times up to 32 times.
+
+* ``--trace-dir=<directory path>``
+
+ Specify trace directory for trace output. For example:
+
+ Configuring ``/tmp/`` as a trace output directory::
+
+ --trace-dir=/tmp
+
+ By default, trace output will created at ``home`` directory and parameter
+ must be specified once only.
+
+* ``--trace-bufsz=<val>``
+
+ Specify maximum size of allocated memory for trace output for each thread.
+ Valid unit can be either ``B`` or ``K`` or ``M`` for ``Bytes``, ``KBytes``
+ and ``MBytes`` respectively. For example:
+
+ Configuring ``2MB`` as a maximum size for trace output file::
+
+ --trace-bufsz=2M
+
+ By default, size of trace output file is ``1MB`` and parameter
+ must be specified once only.
+
+* ``--trace-mode=<o[verwrite] | d[iscard] >``
+
+ Specify the mode of update of trace output file. Either update on a file
+ can be wrapped or discarded when file size reaches its maximum limit.
+ For example:
+
+ To ``discard`` update on trace output file::
+
+ --trace-mode=d or --trace-mode=discard
+
+ Default mode is ``overwrite`` and parameter must be specified once only.
+