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authorLibravatar Derrick Stolee <dstolee@microsoft.com>2019-09-02 19:22:02 -0700
committerLibravatar Junio C Hamano <gitster@pobox.com>2019-09-03 12:06:14 -0700
commit50f26bd035816c2bb79582b834d59b49292502a9 (patch)
tree48d8a75a581c0acb513b5351f472d0a6aa97fe93 /Documentation
parentrepo-settings: create feature.experimental setting (diff)
downloadtgif-50f26bd035816c2bb79582b834d59b49292502a9.tar.xz
fetch: add fetch.writeCommitGraph config setting
The commit-graph feature is now on by default, and is being written during 'git gc' by default. Typically, Git only writes a commit-graph when a 'git gc --auto' command passes the gc.auto setting to actualy do work. This means that a commit-graph will typically fall behind the commits that are being used every day. To stay updated with the latest commits, add a step to 'git fetch' to write a commit-graph after fetching new objects. The fetch.writeCommitGraph config setting enables writing a split commit-graph, so on average the cost of writing this file is very small. Occasionally, the commit-graph chain will collapse to a single level, and this could be slow for very large repos. For additional use, adjust the default to be true when feature.experimental is enabled. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/config/feature.txt8
-rw-r--r--Documentation/config/fetch.txt10
2 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/config/feature.txt b/Documentation/config/feature.txt
index 545522f306..875f8c8a66 100644
--- a/Documentation/config/feature.txt
+++ b/Documentation/config/feature.txt
@@ -17,6 +17,14 @@ which can improve `git push` performance in repos with many files.
+
* `fetch.negotiationAlgorithm=skipping` may improve fetch negotiation times by
skipping more commits at a time, reducing the number of round trips.
++
+* `fetch.writeCommitGraph=true` writes a commit-graph after every `git fetch`
+command that downloads a pack-file from a remote. Using the `--split` option,
+most executions will create a very small commit-graph file on top of the
+existing commit-graph file(s). Occasionally, these files will merge and the
+write may take longer. Having an updated commit-graph file helps performance
+of many Git commands, including `git merge-base`, `git push -f`, and
+`git log --graph`.
feature.manyFiles::
Enable config options that optimize for repos with many files in the
diff --git a/Documentation/config/fetch.txt b/Documentation/config/fetch.txt
index d402110638..e8cb20547c 100644
--- a/Documentation/config/fetch.txt
+++ b/Documentation/config/fetch.txt
@@ -69,3 +69,13 @@ fetch.showForcedUpdates::
Set to false to enable `--no-show-forced-updates` in
linkgit:git-fetch[1] and linkgit:git-pull[1] commands.
Defaults to true.
+
+fetch.writeCommitGraph::
+ Set to true to write a commit-graph after every `git fetch` command
+ that downloads a pack-file from a remote. Using the `--split` option,
+ most executions will create a very small commit-graph file on top of
+ the existing commit-graph file(s). Occasionally, these files will
+ merge and the write may take longer. Having an updated commit-graph
+ file helps performance of many Git commands, including `git merge-base`,
+ `git push -f`, and `git log --graph`. Defaults to false, unless
+ `feature.experimental` is true.