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183 lines
4.8 KiB
183 lines
4.8 KiB
#!/bin/sh |
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test_description="Test core.fsmonitor" |
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. ./perf-lib.sh |
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# |
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# Performance test for the fsmonitor feature which enables git to talk to a |
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# file system change monitor and avoid having to scan the working directory |
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# for new or modified files. |
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# |
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# By default, the performance test will utilize the Watchman file system |
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# monitor if it is installed. If Watchman is not installed, it will use a |
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# dummy integration script that does not report any new or modified files. |
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# The dummy script has very little overhead which provides optimistic results. |
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# |
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# The performance test will also use the untracked cache feature if it is |
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# available as fsmonitor uses it to speed up scanning for untracked files. |
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# |
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# There are 3 environment variables that can be used to alter the default |
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# behavior of the performance test: |
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# |
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# GIT_PERF_7519_UNTRACKED_CACHE: used to configure core.untrackedCache |
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# GIT_PERF_7519_SPLIT_INDEX: used to configure core.splitIndex |
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# GIT_PERF_7519_FSMONITOR: used to configure core.fsMonitor |
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# |
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# The big win for using fsmonitor is the elimination of the need to scan the |
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# working directory looking for changed and untracked files. If the file |
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# information is all cached in RAM, the benefits are reduced. |
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# |
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# GIT_PERF_7519_DROP_CACHE: if set, the OS caches are dropped between tests |
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# |
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test_perf_large_repo |
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test_checkout_worktree |
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test_lazy_prereq UNTRACKED_CACHE ' |
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{ git update-index --test-untracked-cache; ret=$?; } && |
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test $ret -ne 1 |
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' |
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test_lazy_prereq WATCHMAN ' |
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command -v watchman |
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' |
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if test_have_prereq WATCHMAN |
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then |
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# Convert unix style paths to escaped Windows style paths for Watchman |
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case "$(uname -s)" in |
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MSYS_NT*) |
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GIT_WORK_TREE="$(cygpath -aw "$PWD" | sed 's,\\,/,g')" |
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;; |
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*) |
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GIT_WORK_TREE="$PWD" |
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;; |
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esac |
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fi |
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if test -n "$GIT_PERF_7519_DROP_CACHE" |
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then |
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# When using GIT_PERF_7519_DROP_CACHE, GIT_PERF_REPEAT_COUNT must be 1 to |
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# generate valid results. Otherwise the caching that happens for the nth |
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# run will negate the validity of the comparisons. |
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if test "$GIT_PERF_REPEAT_COUNT" -ne 1 |
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then |
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echo "warning: Setting GIT_PERF_REPEAT_COUNT=1" >&2 |
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GIT_PERF_REPEAT_COUNT=1 |
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fi |
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fi |
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test_expect_success "setup for fsmonitor" ' |
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# set untrackedCache depending on the environment |
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if test -n "$GIT_PERF_7519_UNTRACKED_CACHE" |
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then |
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git config core.untrackedCache "$GIT_PERF_7519_UNTRACKED_CACHE" |
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else |
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if test_have_prereq UNTRACKED_CACHE |
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then |
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git config core.untrackedCache true |
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else |
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git config core.untrackedCache false |
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fi |
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fi && |
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# set core.splitindex depending on the environment |
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if test -n "$GIT_PERF_7519_SPLIT_INDEX" |
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then |
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git config core.splitIndex "$GIT_PERF_7519_SPLIT_INDEX" |
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fi && |
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# set INTEGRATION_SCRIPT depending on the environment |
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if test -n "$GIT_PERF_7519_FSMONITOR" |
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then |
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INTEGRATION_SCRIPT="$GIT_PERF_7519_FSMONITOR" |
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else |
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# |
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# Choose integration script based on existence of Watchman. |
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# If Watchman exists, watch the work tree and attempt a query. |
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# If everything succeeds, use Watchman integration script, |
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# else fall back to an empty integration script. |
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# |
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mkdir .git/hooks && |
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if test_have_prereq WATCHMAN |
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then |
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INTEGRATION_SCRIPT=".git/hooks/fsmonitor-watchman" && |
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cp "$TEST_DIRECTORY/../templates/hooks--fsmonitor-watchman.sample" "$INTEGRATION_SCRIPT" && |
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watchman watch "$GIT_WORK_TREE" && |
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watchman watch-list | grep -q -F "$GIT_WORK_TREE" |
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else |
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INTEGRATION_SCRIPT=".git/hooks/fsmonitor-empty" && |
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write_script "$INTEGRATION_SCRIPT"<<-\EOF |
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EOF |
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fi |
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fi && |
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git config core.fsmonitor "$INTEGRATION_SCRIPT" && |
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git update-index --fsmonitor |
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' |
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if test -n "$GIT_PERF_7519_DROP_CACHE"; then |
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test-tool drop-caches |
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fi |
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test_perf "status (fsmonitor=$INTEGRATION_SCRIPT)" ' |
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git status |
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' |
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if test -n "$GIT_PERF_7519_DROP_CACHE"; then |
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test-tool drop-caches |
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fi |
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test_perf "status -uno (fsmonitor=$INTEGRATION_SCRIPT)" ' |
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git status -uno |
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' |
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if test -n "$GIT_PERF_7519_DROP_CACHE"; then |
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test-tool drop-caches |
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fi |
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test_perf "status -uall (fsmonitor=$INTEGRATION_SCRIPT)" ' |
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git status -uall |
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' |
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test_expect_success "setup without fsmonitor" ' |
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unset INTEGRATION_SCRIPT && |
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git config --unset core.fsmonitor && |
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git update-index --no-fsmonitor |
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' |
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if test -n "$GIT_PERF_7519_DROP_CACHE"; then |
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test-tool drop-caches |
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fi |
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test_perf "status (fsmonitor=$INTEGRATION_SCRIPT)" ' |
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git status |
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' |
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if test -n "$GIT_PERF_7519_DROP_CACHE"; then |
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test-tool drop-caches |
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fi |
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test_perf "status -uno (fsmonitor=$INTEGRATION_SCRIPT)" ' |
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git status -uno |
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' |
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if test -n "$GIT_PERF_7519_DROP_CACHE"; then |
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test-tool drop-caches |
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fi |
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test_perf "status -uall (fsmonitor=$INTEGRATION_SCRIPT)" ' |
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git status -uall |
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' |
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if test_have_prereq WATCHMAN |
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then |
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watchman watch-del "$GIT_WORK_TREE" >/dev/null 2>&1 && |
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# Work around Watchman bug on Windows where it holds on to handles |
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# preventing the removal of the trash directory |
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watchman shutdown-server >/dev/null 2>&1 |
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fi |
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test_done
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