From: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
The feature.manyFiles setting is suitable for repos with many
files in the working directory. By setting index.version=4 and
core.untrackedCache=true, commands such as 'git status' should
improve.
While adding this setting, modify the index version precedence
tests to check how this setting overrides the default for
index.version is unset.
Signed-off-by: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
---
Documentation/config/core.txt | 4 +++-
Documentation/config/feature.txt | 12 +++++++++++-
Documentation/config/index.txt | 1 +
repo-settings.c | 4 ++++
t/t1600-index.sh | 31 ++++++++++++++++++++++++++-----
5 files changed, 45 insertions(+), 7 deletions(-)
diff --git a/Documentation/config/core.txt b/Documentation/config/core.txt
index d80162681a..7a2a33bc8c 100644
--- a/Documentation/config/core.txt
+++ b/Documentation/config/core.txt
@@ -86,7 +86,9 @@ core.untrackedCache::
it will automatically be removed, if set to `false`. Before
setting it to `true`, you should check that mtime is working
properly on your system.
- See linkgit:git-update-index[1]. `keep` by default.
+ See linkgit:git-update-index[1]. `keep` by default, unless
+ `feature.manyFiles` is enabled which sets this setting to
+ `true` by default.
core.checkStat::
When missing or is set to `default`, many fields in the stat
diff --git a/Documentation/config/feature.txt b/Documentation/config/feature.txt
index f74314ae90..c2d9ef7473 100644
--- a/Documentation/config/feature.txt
+++ b/Documentation/config/feature.txt
@@ -12,4 +12,14 @@ feature.manyCommits::
* `core.commitGraph=true` enables reading the commit-graph file.
+
* `gc.writeCommitGraph=true` enables writing the commit-graph file during
-garbage collection.
\ No newline at end of file
+garbage collection.
+
+feature.manyFiles::
+ Enable config options that optimize for repos with many files in the
+ working directory. With many files, commands such as `git status` and
+ `git checkout` may be slow and these new defaults improve performance:
++
+* `index.version=4` enables path-prefix compression in the index.
++
+* `core.untrackedCache=true` enables the untracked cache. This setting assumes
+that mtime is working on your machine.
\ No newline at end of file
diff --git a/Documentation/config/index.txt b/Documentation/config/index.txt
index f181503041..7cb50b37e9 100644
--- a/Documentation/config/index.txt
+++ b/Documentation/config/index.txt
@@ -24,3 +24,4 @@ index.threads::
index.version::
Specify the version with which new index files should be
initialized. This does not affect existing repositories.
+ If `feature.manyFiles` is enabled, then the default is 4.
diff --git a/repo-settings.c b/repo-settings.c
index 65b980403c..3a5cf33814 100644
--- a/repo-settings.c
+++ b/repo-settings.c
@@ -43,6 +43,10 @@ void prepare_repo_settings(struct repository *r)
UPDATE_DEFAULT(r->settings.core_commit_graph, 1);
UPDATE_DEFAULT(r->settings.gc_write_commit_graph, 1);
}
+ if (!repo_config_get_bool(r, "feature.manyfiles", &value) && value) {
+ UPDATE_DEFAULT(r->settings.index_version, 4);
+ UPDATE_DEFAULT(r->settings.core_untracked_cache, UNTRACKED_CACHE_WRITE);
+ }
/* Hack for test programs like test-dump-untracked-cache */
if (ignore_untracked_cache_config)
diff --git a/t/t1600-index.sh b/t/t1600-index.sh
index 42962ed7d4..c77721b580 100755
--- a/t/t1600-index.sh
+++ b/t/t1600-index.sh
@@ -59,17 +59,38 @@ test_expect_success 'out of bounds index.version issues warning' '
)
'
-test_expect_success 'GIT_INDEX_VERSION takes precedence over config' '
+test_index_version () {
+ INDEX_VERSION_CONFIG=$1 &&
+ FEATURE_MANY_FILES=$2 &&
+ ENV_VAR_VERSION=$3
+ EXPECTED_OUTPUT_VERSION=$4 &&
(
rm -f .git/index &&
- GIT_INDEX_VERSION=4 &&
- export GIT_INDEX_VERSION &&
- git config --add index.version 2 &&
+ rm -f .git/config &&
+ if test "$INDEX_VERSION_CONFIG" -ne 0
+ then
+ git config --add index.version $INDEX_VERSION_CONFIG
+ fi &&
+ git config --add feature.manyFiles $FEATURE_MANY_FILES
+ if test "$ENV_VAR_VERSION" -ne 0
+ then
+ GIT_INDEX_VERSION=$ENV_VAR_VERSION &&
+ export GIT_INDEX_VERSION
+ else
+ unset GIT_INDEX_VERSION
+ fi &&
git add a 2>&1 &&
- echo 4 >expect &&
+ echo $EXPECTED_OUTPUT_VERSION >expect &&
test-tool index-version <.git/index >actual &&
test_cmp expect actual
)
+}
+
+test_expect_success 'index version config precedence' '
+ test_index_version 2 false 4 4 &&
+ test_index_version 2 true 0 2 &&
+ test_index_version 0 true 0 4 &&
+ test_index_version 0 true 2 2
'
test_done
--
gitgitgadget
