ust-systemtap-tracepoints/runtest.sh

   1 #!/bin/sh
   2
   3 # UST vs SystemTap scalability test
   4 # This script can run 4 different tests :
   5 # - UST in flight recorder mode
   6 # - UST writing the trace to disk
   7 # - SystemTap in flight recorder mode
   8 # - SystemTap writing the trace to disk
   9
  10 # You need to be root to run the SystemTap tests because of the rmmod
  11
  12 BINARY=./tracepoint_benchmark
  13 MODNAME=tpbench
  14 REPORT=/tmp/testreport
  15 TMPLOG=/tmp/testlog
  16 WRAPPER=""
  17 CLEANUP=""
  18 STAP=stap
  19 STAPTMP=/tmp/stapconsole
  20 STAPPROBE=testutrace.stp
  21
  22 rm $REPORT 2>/dev/null
  23
  24 ust_flight_recorder() {
  25         # flight recorder, don't record trace to disk.
  26         # default buffer size is 4k
  27         echo -n "* UST Flight recorder : " | tee >> $REPORT
  28         export UST_AUTOCOLLECT=0
  29         export UST_OVERWRITE=1
  30         export UST_SUBBUF_NUM=16
  31         WRAPPER=usttrace
  32 }
  33
  34 ust_disk() {
  35         # Collect traces to disk
  36         # default buffer size is 4k
  37         echo -n "* UST Write to disk : " | tee >> $REPORT
  38         export UST_AUTOCOLLECT=1
  39         export UST_OVERWRITE=0
  40         export UST_SUBBUF_NUM=16
  41         WRAPPER=usttrace
  42 }
  43
  44 stap_flight_recorder() {
  45         echo -n "* SystemTap Flight recorder : " | tee >> $REPORT
  46         WRAPPER=""
  47         $STAP $STAPPROBE -F -m $MODNAME
  48 }
  49
  50 stap_disk() {
  51         echo -n "* SystemTap Write to disk : " | tee >> $REPORT
  52         WRAPPER=""
  53         $STAP $STAPPROBE -o $STAPTMP -m $MODNAME &
  54         sleep 5
  55 }
  56
  57 echo "Userspace tracing scalability test report" |tee >> $REPORT
  58 case "$1" in
  59         ust_flight_recorder)
  60                 TEST=ust_flight_recorder
  61                 ;;
  62         ust_disk)
  63                 TEST=ust_disk
  64                 ;;
  65         stap_flight_recorder)
  66                 TEST=stap_flight_recorder
  67                 CLEANUP="rmmod $MODNAME 2>/dev/null"
  68                 ;;
  69         stap_disk)
  70                 TEST=stap_disk
  71                 CLEANUP="killall stapio 2>/dev/null"
  72                 ;;
  73         *)
  74                 echo "Usage : $0 {ust_flight_recorder|ust_disk|stap_flight_recorder|stap_disk}"
  75                 exit 1
  76                 ;;
  77 esac
  78
  79 for nr_threads in 1 2 4 8; do
  80         echo "" | tee >> $REPORT
  81         echo Number of threads: $nr_threads | tee >> $REPORT
  82         echo -n "* Baseline : " | tee >> $REPORT
  83
  84         eval $CLEANUP
  85
  86         sync
  87         /usr/bin/time -f "%E" -o $TMPLOG $BINARY ${nr_threads}
  88         cat $TMPLOG >> $REPORT
  89
  90         $TEST
  91
  92         sync
  93         /usr/bin/time -f "%E" -o $TMPLOG $WRAPPER $BINARY ${nr_threads}
  94         cat $TMPLOG >> $REPORT
  95 done
  96
  97 cat $REPORT
  98