README-LIVE

   1 In order to use the (beta) live tracing features of LttngTop, you need these
   2 branches :
   3
   4 git clone -b lttngtop-live git://git.dorsal.polymtl.ca/~jdesfossez/lttng-tools
   5 git clone -b lttngtop-live git://git.dorsal.polymtl.ca/~jdesfossez/babeltrace
   6
   7 The only difference between these branches and the master branch is that they
   8 export an additional library that is used by lttngtop to do live tracing.
   9
  10 You have to compile and install lttng-tools before babeltrace since there are
  11 dependencies on the library exposed by this special lttng-tools in babeltrace
  12 for live mmap buffer consuming.
  13
  14 Then you can compile and use the live branch of LttngTop :
  15 git clone -b live git://git.lttng.org/lttngtop.git
  16
  17 Once everything is installed, you can start as root lttng-sessiond and use
  18 lttngtop (as root or from a user part of the "tracing" group).
  19
  20 Note: if lttng-sessiond has been used to record a trace before starting
  21 lttngtop (normal lttng use-case), you need to restart it because it
  22 automatically spawned a consumer that prevents lttngtop from registering its
  23 own consumer. The same applies when you finish using lttngtop, you need to
  24 restart the lttng-sessiond daemon to allow others to record traces again. This
  25 is a know problem of integration that will be fixed.