tests/benchmark/run

   1 #!/bin/bash
   2 #
   3 # run ust benchmark
   4 #
   5
   6 echo "ust benchmark"
   7
   8 NR_EVENTS=2000000
   9 NR_CPUS=2
  10 echo "using $NR_CPUS processor(s)"
  11 echo "using $NR_EVENTS events per cpu"
  12
  13
  14 rm -f /tmp/bench.txt
  15 # without markers
  16 echo ">running without markers"
  17 t1=$(/usr/bin/time -f%e usttrace ./bench1 $NR_CPUS $NR_EVENTS 2>&1 1> /dev/null)
  18 echo " time=$t1 sec"
  19
  20
  21 rm -f /tmp/bench.txt
  22 # with markers
  23 echo ">running with markers activated"
  24 t2=$(/usr/bin/time -f%e usttrace ./bench2 $NR_CPUS $NR_EVENTS 2>&1 1> /dev/null)
  25 echo " time=$t2 sec"
  26
  27
  28 #penalty = t2 - t1
  29 echo
  30 penalty=$(echo "$t2 - $t1;" | bc)
  31 echo "time penalty=$penalty sec"
  32
  33 #event = penalty / (nr_events * nr_cpus)
  34 event=$(echo "scale=8; ($penalty / ($NR_EVENTS * $NR_CPUS));" | bc)
  35 echo "time penalty per event=$event sec"
  36
  37 rm -f /tmp/bench.txt