utils/lttngtop-live-simple.sh

   1 #!/bin/bash
   2
   3 # Setup a live LTTng session on localhost
   4
   5 SESSION_NAME="lttngtop-live-simple"
   6 DEBUG=">/dev/null"
   7
   8 pgrep -u root lttng-sessiond >/dev/null
   9 if test $? != 0; then
  10         echo "Starting lttng-sessiond as root (trying sudo, start manually if \
  11 it fails)"
  12         sudo lttng-sessiond -d
  13         if test $? != 0; then
  14                 exit 1
  15         fi
  16 fi
  17
  18 pgrep lttng-relayd >/dev/null
  19 if test $? != 0; then
  20         echo "Starting lttng-relayd as your current user, start manually if \
  21 it fails"
  22         lttng-relayd -d
  23         if test $? != 0; then
  24                 exit 1
  25         fi
  26 fi
  27
  28 SUDO=""
  29 groups|grep tracing >/dev/null
  30 if test $? != 0; then
  31         echo "You are not a member of the tracing group, so you need root \
  32 access, the script will try with sudo"
  33         SUDO="sudo"
  34 fi
  35
  36 # check if lttng command if in the path
  37 # check if the user can execute the command (with sudo if not in tracing group)
  38 # check if lttng-modules is installed
  39 $SUDO lttng list -k | grep sched_switch >/dev/null
  40 if test $? != 0; then
  41         echo "Something went wrong executing \"$SUDO lttng list -k | grep sched_switch\", \
  42 try to fix the problem manually and then start the script again"
  43 fi
  44
  45 lttng create $SESSION_NAME --live 1000000 -U net://localhost >/dev/null
  46 [[ $? != 0 ]] && exit 2
  47 lttng enable-event -s $SESSION_NAME -k lttng_statedump_start,lttng_statedump_end,lttng_statedump_process_state,lttng_statedump_file_descriptor,lttng_statedump_vm_map,lttng_statedump_network_interface,lttng_statedump_interrupt,sched_process_free,sched_switch,sched_process_fork >/dev/null
  48 [[ $? != 0 ]] && exit 2
  49 lttng enable-event -s $SESSION_NAME -k --syscall -a >/dev/null
  50 [[ $? != 0 ]] && exit 2
  51 lttng add-context -s $SESSION_NAME -k -t pid -t procname -t tid -t ppid -t perf:cache-misses -t perf:major-faults -t perf:branch-load-misses >/dev/null
  52 [[ $? != 0 ]] && exit 2
  53 lttng start $SESSION_NAME >/dev/null
  54 [[ $? != 0 ]] && exit 2
  55
  56 s=$(lttngtop -r net://localhost | grep $SESSION_NAME)
  57 if test $? != 0; then
  58         echo "Problem executing lttngtop -r net://localhost | grep $SESSION_NAME"
  59         exit 1
  60 fi
  61
  62 lttngtop -r $(echo $s|cut -d' ' -f1)
  63
  64 lttng destroy $SESSION_NAME >/dev/null
  65 echo -n "Destroy $HOME/lttng-traces/$HOSTNAME/${SESSION_NAME}* (Y/n) ? "
  66 read a
  67 if test $a = 'y' -o $a = 'Y'; then
  68         rm -rf $HOME/lttng-traces/$HOSTNAME/${SESSION_NAME}*
  69 fi