Restore stress_test_common script.

courgette/analyze_stress_test

 #!/bin/bash
 
 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Produce metrics analyzing the output of a stress test
 
 source "$(dirname ${0})/stress_test_common"
 
@@ skipping 35 matching lines @@
     exit 1
   fi
 
   cat <<EOF
 $(count_result "PASS_COURGETTE") successful courgette patches
 $(count_result "FAIL_COURGETTE") failed courgette patches
 $(count_result "FAIL_DISASSEMBLE") failed to disassemble/assemble
 $(count_result "PASS_BSDIFF") succesful bsdiff patches
 $(count_result "FAIL_BSDIFF") failed bsdiff patches
 $(count_result "BEST_COURGETTE") patch(es) where courgette is smaller (bz2)
-$(count_result "BEST_BSDIFF") patch(es) where bsdiff is smaller (xz)
+$(count_result "BEST_BSDIFF") patch(es) where bsdiff is smaller (bz2)
 $(count_result "BEST_TIE") patch(es) where both are the same size (bz2)
 $(count_result "XZBEST_COURGETTE") patch(es) where courgette (xz) is smaller
 $(count_result "XZBEST_BSDIFF") patch(es) where bsdiff is smaller (xz)
 $(count_result "XZBEST_TIE") patch(es) where both are the same size (xz)
 EOF
 
   # Log file has the format "^SIZE courgette=... bsdiff=..."
   local courgette_total="$(cat "${log}" \
     | grep "^SIZE " \
     | cut -d' ' -f2 \
@@ skipping 48 matching lines @@
     | awk '{printf "%.2f\n", $0}')"
   echo "${pct_savings}% savings (xz)"
 
   echo "$(compute_percentiles "TIME_GEN")to generate a patch (50th 90th 100th)"
   echo "$(compute_percentiles "TIME_APPLY")to apply a patch (50th 90th 100th)"
   echo "$(compute_percentiles "TIME_BSDIFF")for bsdiff (50th 90th 100th)"
   echo "$(compute_percentiles "TIME_BSPATCH")for bspatch (50th 90th 100th)"
 }
 
 main "${@}"