Update packedGit config option documentation.

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 178e0e1e209e066ad220d6ba95be0728c2db5e99..6c838290188fdd1ab6f5efb61c849c10c5e5b94b 100644 (file)
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -82,13 +82,13 @@ core.logAllRefUpdates::
        only when the file exists.  If this configuration
        variable is set to true, missing "$GIT_DIR/logs/<ref>"
        file is automatically created for branch heads.
-
-       This information can be used to determine what commit
-       was the tip of a branch "2 days ago".
-
-       This value is true by default in a repository that has
-       a working directory associated with it, and false by
-       default in a bare repository.
++
+This information can be used to determine what commit
+was the tip of a branch "2 days ago".
++
+This value is true by default in a repository that has
+a working directory associated with it, and false by
+default in a bare repository.
 
 core.repositoryFormatVersion::
        Internal variable identifying the repository format and layout
@@ -118,6 +118,30 @@ core.legacyheaders::
        database directly (where the "http://" and "rsync://" protocols
        count as direct access).
 
+core.packedGitWindowSize::
+       Number of bytes of a pack file to map into memory in a
+       single mapping operation.  Larger window sizes may allow
+       your system to process a smaller number of large pack files
+       more quickly.  Smaller window sizes will negatively affect
+       performance due to increased calls to the operating system's
+       memory manager, but may improve performance when accessing
+       a large number of large pack files.  Default is 32 MiB,
+       which should be reasonable for all users/operating systems.
+       You probably do not need to adjust this value.
++
+Common unit suffixes of 'k', 'm', or 'g' are supported.
+
+core.packedGitLimit::
+       Maximum number of bytes to map simultaneously into memory
+       from pack files.  If Git needs to access more than this many
+       bytes at once to complete an operation it will unmap existing
+       regions to reclaim virtual address space within the process.
+       Default is 256 MiB, which should be reasonable for all
+       users/operating systems, except on the largest projects.
+       You probably do not need to adjust this value.
++
+Common unit suffixes of 'k', 'm', or 'g' are supported.
+
 alias.*::
        Command aliases for the gitlink:git[1] command wrapper - e.g.
        after defining "alias.last = cat-file commit HEAD", the invocation