src/courgette/run_stress_test

   1 #!/bin/bash
   2
   3 # Copyright 2013 The Chromium Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style license that can be
   5 # found in the LICENSE file.
   6
   7 # Stress test and size measurement for courgette patches.
   8
   9 source "$(dirname ${0})/stress_test_common"
  10
  11 outdir_prefix="stress_test_"
  12 time="/usr/bin/time"
  13
  14 if [ $# -lt 2 ]; then
  15   cat <<EOF
  16
  17 USAGE: $(basename ${0}) [-s] dir1 dir2 [outdir]
  18
  19   -s only test files supported by courgette
  20
  21 Stress test courgette by generating and applying patches for two given
  22 directories, dir1 and dir2.  The test will use files with the same
  23 name and relative path in the two directories, which makes it easy to
  24 compare two extracted ChromeOS images.  It also compares the unzipped
  25 and bzipped patches against the likewise bsdiff patches.  If outdir is
  26 not specified, the name will be "${outdir_prefix}" concatenated with
  27 the current date and time.
  28
  29 EOF
  30   exit 1
  31 fi
  32
  33 if [ "${1}" == "-s" ]; then
  34   test_supported_only=true
  35   shift
  36 else
  37   test_supported_only=
  38 fi
  39
  40 dir1="${1}"
  41 if [ ! -e "${dir1}" ]; then
  42   error "\"${dir1}\" not found"
  43   exit 1
  44 fi
  45
  46 dir2="${2}"
  47 if [ ! -e "${dir2}" ]; then
  48   error "\"${dir2}\" not found"
  49   exit 1
  50 fi
  51
  52 out_dir="${3:-${outdir_prefix}$(date +%Y%m%d_%H%M%S)}"
  53 if [ -e "${out_dir}" ]; then
  54   error "\"${out_dir}\" already exists"
  55   exit 1
  56 fi
  57
  58 mkdir -p "${out_dir}" || exit 1
  59
  60 patches_dir="${out_dir}/patches"
  61 applied_dir="${out_dir}/applied"
  62 dis_dir="${out_dir}/dis"
  63 bsdiff="${out_dir}/bsdiff"
  64 log="${out_dir}/log"
  65 results="${out_dir}/results"
  66
  67 echo "${0} ${@}" > "${log}"
  68 date >> "${log}"
  69
  70 run_test() {
  71   if [[ ! -z "${1}" && ! -z "${2}" ]]; then
  72     local file1="${1}"
  73     local file2="${2}"
  74     local patch="${patches_dir}/${file1}.patch"
  75     local apply="${applied_dir}/${file2}.applied"
  76     local dis="${dis_dir}/${file1}.dis"
  77     local asm="${dis_dir}/${file1}.asm"
  78     mkdir -p "$(dirname "${dis}")"
  79     if [ ! $test_supported_only ]; then
  80       courgette -supported "${file1}" >/dev/null
  81       if [ "${?}" -eq 0 ]; then
  82         courgette -dis "${file1}" "${dis}"
  83         courgette -asm "${dis}" "${asm}"
  84         cmp -s "${file1}" "${asm}"
  85         if [ "${?}" -ne 0 ]; then
  86           echo "FAIL_DISASSEMBLE ${file1}"
  87         fi
  88       fi
  89     fi
  90     mkdir -p "$(dirname "${patch}")"
  91     mkdir -p "$(dirname "${apply}")"
  92     echo "courgette -gen"
  93     ${time} -f "TIME_GEN %e ${file1}" courgette -gen "${file1}" "${file2}" \
  94       "${patch}"
  95     echo "courgette -apply"
  96     ${time} -f "TIME_APPLY %e ${file1}" courgette -apply "${file1}" "${patch}" \
  97       "${apply}"
  98     cmp -s "${file2}" "${apply}"
  99     if [ "${?}" -ne 0 ]; then
 100       echo "FAIL_COURGETTE ${file1}"
 101     else
 102       echo "PASS_COURGETTE ${file1}"
 103       local bsdiff_patch="${patches_dir}/${file1}.bsdiff_patch"
 104       local bsdiff_apply="${applied_dir}/${file2}.bsdiff_applied"
 105       echo "RUN bsdiff"
 106       ${time} -f "TIME_BSDIFF %e ${file1}" bsdiff "${file1}" "${file2}" \
 107         "${bsdiff_patch}"
 108       echo "RUN bspatch"
 109       ${time} -f "TIME_BSPATCH %e ${file1}" bspatch "${file1}" \
 110         "${bsdiff_apply}" "${bsdiff_patch}"
 111       cmp -s "${file2}" "${bsdiff_apply}"
 112       if [ "${?}" -ne 0 ]; then
 113         echo "FAIL_BSDIFF ${file1}"
 114       else
 115         echo "PASS_BSDIFF ${file1}"
 116         local bz2_patch="${patch}.bz2"
 117         local xz_patch="${patch}.xz"
 118         bzip2 -9 -c "${patch}" > "${bz2_patch}"
 119         xz -9 -c "${patch}" > "${xz_patch}"
 120         local patch_size="$(du -b "${bz2_patch}" | cut -f1)"
 121         local bsdiff_patch_size="$(du -b "${bsdiff_patch}" | cut -f1)"
 122         local xz_patch_size="$(du -b "${xz_patch}" | cut -f1)"
 123         echo "SIZE courgette=${patch_size} bsdiff=${bsdiff_patch_size}" \
 124           "courgette_xz=${xz_patch_size} ${file1}"
 125         if [ "${patch_size}" -eq "${bsdiff_patch_size}" ]; then
 126           echo "BEST_TIE ${patch_size} ${file1}"
 127         elif [ "${patch_size}" -lt "${bsdiff_patch_size}" ]; then
 128           echo "BEST_COURGETTE ${patch_size} ${file1}"
 129         elif [ "${patch_size}" -gt "${bsdiff_patch_size}" ]; then
 130           echo "BEST_BSDIFF ${bsdiff_patch_size} ${file1}"
 131         fi
 132         if [ "${xz_patch_size}" -eq "${bsdiff_patch_size}" ]; then
 133           echo "XZBEST_TIE ${xz_patch_size} ${file1}"
 134         elif [ "${xz_patch_size}" -lt "${bsdiff_patch_size}" ]; then
 135           echo "XZBEST_COURGETTE ${xz_patch_size} ${file1}"
 136         elif [ "${xz_patch_size}" -gt "${bsdiff_patch_size}" ]; then
 137           echo "XZBEST_BSDIFF ${bsdiff_patch_size} ${file1}"
 138         fi
 139       fi
 140     fi
 141   fi
 142 }
 143
 144 # Use diff to find the files that appear in both directories.
 145 time diff -qr "${dir1}" "${dir2}" 2>/dev/null \
 146   | grep "^Files" \
 147   | awk '{print $2,$4}' \
 148   | while read file; do
 149   # Use awk to separate the two filenames.  May break if filenames
 150   # contain spaces.
 151   file1="$(echo "${file}" | awk '{print $1}')"
 152   file2="$(echo "${file}" | awk '{print $2}')"
 153   if [ $test_supported_only ]; then
 154     courgette -supported "${file1}" >/dev/null
 155     if [ "${?}" -ne 0 ]; then
 156       continue;
 157     fi
 158   fi
 159   run_test "${file1}" "${file2}"
 160 done 2>&1 | tee -a "${log}"
 161
 162 date >> "${log}"
 163
 164 cat <<EOF | tee -a "${log}"
 165 $(count_result "PASS_COURGETTE") successful courgette patches
 166 $(count_result "FAIL_COURGETTE") failed courgette patches (search log for \
 167 "^FAIL_COURGETTE")
 168 $(count_result "FAIL_DISASSEMBLE") failed to disassemble/assemble (search log \
 169 for "^FAIL_DISASSEMBLE")
 170 $(count_result "PASS_BSDIFF") succesful bsdiff patches
 171 $(count_result "FAIL_BSDIFF") failed bsdiff patches
 172 $(count_result "BEST_COURGETTE") patch(es) where courgette (bz2) is smaller
 173 $(count_result "BEST_BSDIFF") patch(es) where bsdiff is smaller (bz2)
 174 $(count_result "BEST_TIE") patch(es) where both are the same size (bz2)
 175 $(count_result "XZBEST_COURGETTE") patch(es) where courgette (xz) is smaller
 176 $(count_result "XZBEST_BSDIFF") patch(es) where bsdiff is smaller (xz)
 177 $(count_result "XZBEST_TIE") patch(es) where both are the same size (xz)
 178 EOF