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Diffstat (limited to '')
| -rwxr-xr-x | t/perf/p7519-fsmonitor.sh | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/t/perf/p7519-fsmonitor.sh b/t/perf/p7519-fsmonitor.sh new file mode 100755 index 0000000..1e20a18 --- /dev/null +++ b/t/perf/p7519-fsmonitor.sh @@ -0,0 +1,233 @@ +#!/bin/sh + +test_description="Test core.fsmonitor" + +. ./perf-lib.sh + +# +# Performance test for the fsmonitor feature which enables git to talk to a +# file system change monitor and avoid having to scan the working directory +# for new or modified files. +# +# By default, the performance test will utilize the Watchman file system +# monitor if it is installed. If Watchman is not installed, it will use a +# dummy integration script that does not report any new or modified files. +# The dummy script has very little overhead which provides optimistic results. +# +# The performance test will also use the untracked cache feature if it is +# available as fsmonitor uses it to speed up scanning for untracked files. +# +# There are 3 environment variables that can be used to alter the default +# behavior of the performance test: +# +# GIT_PERF_7519_UNTRACKED_CACHE: used to configure core.untrackedCache +# GIT_PERF_7519_SPLIT_INDEX: used to configure core.splitIndex +# GIT_PERF_7519_FSMONITOR: used to configure core.fsMonitor. May be an +# absolute path to an integration. May be a space delimited list of +# absolute paths to integrations. +# +# The big win for using fsmonitor is the elimination of the need to scan the +# working directory looking for changed and untracked files. If the file +# information is all cached in RAM, the benefits are reduced. +# +# GIT_PERF_7519_DROP_CACHE: if set, the OS caches are dropped between tests +# + +test_perf_large_repo +test_checkout_worktree + +test_lazy_prereq UNTRACKED_CACHE ' + { git update-index --test-untracked-cache; ret=$?; } && + test $ret -ne 1 +' + +test_lazy_prereq WATCHMAN ' + command -v watchman +' + +if test_have_prereq WATCHMAN +then + # Convert unix style paths to escaped Windows style paths for Watchman + case "$(uname -s)" in + MSYS_NT*) + GIT_WORK_TREE="$(cygpath -aw "$PWD" | sed 's,\\,/,g')" + ;; + *) + GIT_WORK_TREE="$PWD" + ;; + esac +fi + +if test -n "$GIT_PERF_7519_DROP_CACHE" +then + # When using GIT_PERF_7519_DROP_CACHE, GIT_PERF_REPEAT_COUNT must be 1 to + # generate valid results. Otherwise the caching that happens for the nth + # run will negate the validity of the comparisons. + if test "$GIT_PERF_REPEAT_COUNT" -ne 1 + then + echo "warning: Setting GIT_PERF_REPEAT_COUNT=1" >&2 + GIT_PERF_REPEAT_COUNT=1 + fi +fi + +test_expect_success "one time repo setup" ' + # set untrackedCache depending on the environment + if test -n "$GIT_PERF_7519_UNTRACKED_CACHE" + then + git config core.untrackedCache "$GIT_PERF_7519_UNTRACKED_CACHE" + else + if test_have_prereq UNTRACKED_CACHE + then + git config core.untrackedCache true + else + git config core.untrackedCache false + fi + fi && + + # set core.splitindex depending on the environment + if test -n "$GIT_PERF_7519_SPLIT_INDEX" + then + git config core.splitIndex "$GIT_PERF_7519_SPLIT_INDEX" + fi && + + mkdir 1_file 10_files 100_files 1000_files 10000_files && + for i in $(test_seq 1 10); do touch 10_files/$i; done && + for i in $(test_seq 1 100); do touch 100_files/$i; done && + for i in $(test_seq 1 1000); do touch 1000_files/$i; done && + for i in $(test_seq 1 10000); do touch 10000_files/$i; done && + git add 1_file 10_files 100_files 1000_files 10000_files && + git commit -qm "Add files" && + + # If Watchman exists, watch the work tree and attempt a query. + if test_have_prereq WATCHMAN; then + watchman watch "$GIT_WORK_TREE" && + watchman watch-list | grep -q -F "$GIT_WORK_TREE" + fi +' + +setup_for_fsmonitor() { + # set INTEGRATION_SCRIPT depending on the environment + if test -n "$INTEGRATION_PATH" + then + INTEGRATION_SCRIPT="$INTEGRATION_PATH" + else + # + # Choose integration script based on existence of Watchman. + # Fall back to an empty integration script. + # + mkdir .git/hooks && + if test_have_prereq WATCHMAN + then + INTEGRATION_SCRIPT=".git/hooks/fsmonitor-watchman" && + cp "$TEST_DIRECTORY/../templates/hooks--fsmonitor-watchman.sample" "$INTEGRATION_SCRIPT" + else + INTEGRATION_SCRIPT=".git/hooks/fsmonitor-empty" && + write_script "$INTEGRATION_SCRIPT"<<-\EOF + EOF + fi + fi && + + git config core.fsmonitor "$INTEGRATION_SCRIPT" && + git update-index --fsmonitor 2>error && + if test_have_prereq WATCHMAN + then + test_must_be_empty error # ensure no silent error + else + grep "Empty last update token" error + fi +} + +test_perf_w_drop_caches () { + if test -n "$GIT_PERF_7519_DROP_CACHE"; then + test-tool drop-caches + fi + + test_perf "$@" +} + +test_fsmonitor_suite() { + if test -n "$INTEGRATION_SCRIPT"; then + DESC="fsmonitor=$(basename $INTEGRATION_SCRIPT)" + else + DESC="fsmonitor=disabled" + fi + + test_expect_success "test_initialization" ' + git reset --hard && + git status # Warm caches + ' + + test_perf_w_drop_caches "status ($DESC)" ' + git status + ' + + test_perf_w_drop_caches "status -uno ($DESC)" ' + git status -uno + ' + + test_perf_w_drop_caches "status -uall ($DESC)" ' + git status -uall + ' + + test_perf_w_drop_caches "status (dirty) ($DESC)" ' + git ls-files | head -100000 | xargs -d "\n" touch -h && + git status + ' + + test_perf_w_drop_caches "diff ($DESC)" ' + git diff + ' + + test_perf_w_drop_caches "diff -- 0_files ($DESC)" ' + git diff -- 1_file + ' + + test_perf_w_drop_caches "diff -- 10_files ($DESC)" ' + git diff -- 10_files + ' + + test_perf_w_drop_caches "diff -- 100_files ($DESC)" ' + git diff -- 100_files + ' + + test_perf_w_drop_caches "diff -- 1000_files ($DESC)" ' + git diff -- 1000_files + ' + + test_perf_w_drop_caches "diff -- 10000_files ($DESC)" ' + git diff -- 10000_files + ' + + test_perf_w_drop_caches "add ($DESC)" ' + git add --all + ' +} + +if test -n "$GIT_PERF_7519_FSMONITOR"; then + for INTEGRATION_PATH in $GIT_PERF_7519_FSMONITOR; do + test_expect_success "setup for fsmonitor $INTEGRATION_PATH" 'setup_for_fsmonitor' + test_fsmonitor_suite + done +else + test_expect_success "setup for fsmonitor" 'setup_for_fsmonitor' + test_fsmonitor_suite +fi + +test_expect_success "setup without fsmonitor" ' + unset INTEGRATION_SCRIPT && + git config --unset core.fsmonitor && + git update-index --no-fsmonitor +' + +test_fsmonitor_suite + +if test_have_prereq WATCHMAN +then + watchman watch-del "$GIT_WORK_TREE" >/dev/null 2>&1 && + + # Work around Watchman bug on Windows where it holds on to handles + # preventing the removal of the trash directory + watchman shutdown-server >/dev/null 2>&1 +fi + +test_done |