t/perf/bisect_run_script

   1 #!/bin/sh
   2
   3 script="$1"
   4 test_number="$2"
   5 info_dir="$3"
   6
   7 # This aborts the bisection immediately
   8 die () {
   9         echo >&2 "error: $*"
  10         exit 255
  11 }
  12
  13 bisect_head=$(git rev-parse --verify BISECT_HEAD) || die "Failed to find BISECT_HEAD ref"
  14
  15 script_number=$(echo "$script" | sed -e "s/^p\([0-9]*\).*\$/\1/") || die "Failed to get script number for '$script'"
  16
  17 oldtime=$(cat "$info_dir/oldtime") || die "Failed to access '$info_dir/oldtime'"
  18 newtime=$(cat "$info_dir/newtime") || die "Failed to access '$info_dir/newtime'"
  19
  20 cd t/perf || die "Failed to cd into 't/perf'"
  21
  22 result_file="$info_dir/perf_${script_number}_${bisect_head}_results.txt"
  23
  24 GIT_PERF_DIRS_OR_REVS="$bisect_head"
  25 export GIT_PERF_DIRS_OR_REVS
  26
  27 ./run "$script" >"$result_file" 2>&1 || die "Failed to run perf test '$script'"
  28
  29 rtime=$(sed -n "s/^$script_number\.$test_number:.*\([0-9]\+\.[0-9]\+\)(.*).*\$/\1/p" "$result_file")
  30
  31 echo "newtime: $newtime"
  32 echo "rtime: $rtime"
  33 echo "oldtime: $oldtime"
  34
  35 # Compare ($newtime - $rtime) with ($rtime - $oldtime)
  36 # Times are decimal number, not integers
  37
  38 if test $(echo "$newtime" "$rtime" "$oldtime" | awk '{ print ($1 - $2 > $2 - $3) }') = 1
  39 then
  40         # Current commit is considered "good/old"
  41         echo "$rtime" >"$info_dir/oldtime"
  42         exit 0
  43 else
  44         # Current commit is considered "bad/new"
  45         echo "$rtime" >"$info_dir/newtime"
  46         exit 1
  47 fi