1# Performance testing framework. Each perf script starts much like 2# a normal test script, except it sources this library instead of 3# test-lib.sh. See t/perf/README for documentation. 4# 5# Copyright (c) 2011 Thomas Rast 6# 7# This program is free software: you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation, either version 2 of the License, or 10# (at your option) any later version. 11# 12# This program is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with this program. If not, see http://www.gnu.org/licenses/ . 19 20# do the --tee work early; it otherwise confuses our careful 21# GIT_BUILD_DIR mangling 22case "$GIT_TEST_TEE_STARTED, $* " in 23done,*) 24 # do not redirect again 25 ;; 26*' --tee '*|*' --va'*) 27 mkdir -p test-results 28 BASE=test-results/$(basename "$0" .sh) 29 (GIT_TEST_TEE_STARTED=done ${SHELL-sh} "$0" "$@" 2>&1; 30 echo $? > $BASE.exit) | tee $BASE.out 31 test "$(cat $BASE.exit)" = 0 32 exit 33 ;; 34esac 35 36TEST_DIRECTORY=$(pwd)/.. 37TEST_OUTPUT_DIRECTORY=$(pwd) 38if test -z "$GIT_TEST_INSTALLED"; then 39 perf_results_prefix= 40else 41 perf_results_prefix=$(printf "%s" "${GIT_TEST_INSTALLED%/bin-wrappers}" | tr -c "[a-zA-Z0-9]" "[_*]")"." 42 # make the tested dir absolute 43 GIT_TEST_INSTALLED=$(cd "$GIT_TEST_INSTALLED" && pwd) 44fi 45 46TEST_NO_CREATE_REPO=t 47TEST_NO_MALLOC_CHECK=t 48 49. ../test-lib.sh 50 51# Variables from test-lib that are normally internal to the tests; we 52# need to export them for test_perf subshells 53export TEST_DIRECTORY TRASH_DIRECTORY GIT_BUILD_DIR GIT_TEST_CMP 54 55perf_results_dir=$TEST_OUTPUT_DIRECTORY/test-results 56mkdir -p "$perf_results_dir" 57rm -f "$perf_results_dir"/$(basename "$0" .sh).subtests 58 59if test -z "$GIT_PERF_REPEAT_COUNT"; then 60 GIT_PERF_REPEAT_COUNT=3 61fi 62die_if_build_dir_not_repo () { 63 if ! ( cd "$TEST_DIRECTORY/.." && 64 git rev-parse --build-dir >/dev/null 2>&1 ); then 65 error "No $1 defined, and your build directory is not a repo" 66 fi 67} 68 69if test -z "$GIT_PERF_REPO"; then 70 die_if_build_dir_not_repo '$GIT_PERF_REPO' 71 GIT_PERF_REPO=$TEST_DIRECTORY/.. 72fi 73if test -z "$GIT_PERF_LARGE_REPO"; then 74 die_if_build_dir_not_repo '$GIT_PERF_LARGE_REPO' 75 GIT_PERF_LARGE_REPO=$TEST_DIRECTORY/.. 76fi 77 78test_perf_create_repo_from () { 79 test "$#" = 2 || 80 error "bug in the test script: not 2 parameters to test-create-repo" 81 repo="$1" 82 source="$2" 83 source_git=$source/$(cd "$source" && git rev-parse --git-dir) 84 mkdir -p "$repo/.git" 85 ( 86 cd "$repo/.git" && 87 { cp -Rl "$source_git/objects" . 2>/dev/null || 88 cp -R "$source_git/objects" .; } && 89 for stuff in "$source_git"/*; do 90 case "$stuff" in 91 */objects|*/hooks|*/config) 92 ;; 93 *) 94 cp -R "$stuff" . || exit 1 95 ;; 96 esac 97 done && 98 cd .. && 99 git init -q && { 100 test_have_prereq SYMLINKS || 101 git config core.symlinks false 102 } && 103 mv .git/hooks .git/hooks-disabled 2>/dev/null 104 ) || error "failed to copy repository '$source' to '$repo'" 105} 106 107# call at least one of these to establish an appropriately-sized repository 108test_perf_default_repo () { 109 test_perf_create_repo_from "${1:-$TRASH_DIRECTORY}" "$GIT_PERF_REPO" 110} 111test_perf_large_repo () { 112 if test "$GIT_PERF_LARGE_REPO" = "$GIT_BUILD_DIR"; then 113 echo "warning: \$GIT_PERF_LARGE_REPO is \$GIT_BUILD_DIR." >&2 114 echo "warning: This will work, but may not be a sufficiently large repo" >&2 115 echo "warning: for representative measurements." >&2 116 fi 117 test_perf_create_repo_from "${1:-$TRASH_DIRECTORY}" "$GIT_PERF_LARGE_REPO" 118} 119test_checkout_worktree () { 120 git checkout-index -u -a || 121 error "git checkout-index failed" 122} 123 124# Performance tests should never fail. If they do, stop immediately 125immediate=t 126 127test_run_perf_ () { 128 test_cleanup=: 129 test_export_="test_cleanup" 130 export test_cleanup test_export_ 131 /usr/bin/time -f "%E %U %S" -o test_time.$i "$SHELL" -c ' 132. '"$TEST_DIRECTORY"/test-lib-functions.sh' 133test_export () { 134 [ $# != 0 ] || return 0 135 test_export_="$test_export_\\|$1" 136 shift 137 test_export "$@" 138} 139'"$1"' 140ret=$? 141set | sed -n "s'"/'/'\\\\''/g"';s/^\\($test_export_\\)/export '"'&'"'/p" >test_vars 142exit $ret' >&3 2>&4 143 eval_ret=$? 144 145 if test $eval_ret = 0 || test -n "$expecting_failure" 146 then 147 test_eval_ "$test_cleanup" 148 . ./test_vars || error "failed to load updated environment" 149 fi 150 if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then 151 echo "" 152 fi 153 return "$eval_ret" 154} 155 156 157test_perf () { 158 test_start_ 159 test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq= 160 test "$#" = 2 || 161 error "bug in the test script: not 2 or 3 parameters to test-expect-success" 162 export test_prereq 163 if ! test_skip "$@" 164 then 165 base=$(basename "$0" .sh) 166 echo "$test_count" >>"$perf_results_dir"/$base.subtests 167 echo "$1" >"$perf_results_dir"/$base.$test_count.descr 168 if test -z "$verbose"; then 169 printf "%s" "perf $test_count - $1:" 170 else 171 echo "perf $test_count - $1:" 172 fi 173 for i in $(test_seq 1 $GIT_PERF_REPEAT_COUNT); do 174 say >&3 "running: $2" 175 if test_run_perf_ "$2" 176 then 177 if test -z "$verbose"; then 178 printf " %s" "$i" 179 else 180 echo "* timing run $i/$GIT_PERF_REPEAT_COUNT:" 181 fi 182 else 183 test -z "$verbose" && echo 184 test_failure_ "$@" 185 break 186 fi 187 done 188 if test -z "$verbose"; then 189 echo " ok" 190 else 191 test_ok_ "$1" 192 fi 193 base="$perf_results_dir"/"$perf_results_prefix$(basename "$0" .sh)"."$test_count" 194 "$TEST_DIRECTORY"/perf/min_time.perl test_time.* >"$base".times 195 fi 196 test_finish_ 197} 198 199# We extend test_done to print timings at the end (./run disables this 200# and does it after running everything) 201test_at_end_hook_ () { 202 if test -z "$GIT_PERF_AGGREGATING_LATER"; then 203 ( cd "$TEST_DIRECTORY"/perf && ./aggregate.perl $(basename "$0") ) 204 fi 205} 206 207test_export () { 208 export "$@" 209}