Update packedGit config option documentation.

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 28fe6942cf867549e8d19120e339a14cb8347b1b..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
@@ -118,14 +118,29 @@ 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 largest Git projects.
+       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.