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Diffstat (limited to 'Documentation/technical')
| -rw-r--r-- | Documentation/technical/index-format.txt | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/technical/index-format.txt b/Documentation/technical/index-format.txt index 6bc2d90f7f..7c4d67aa6a 100644 --- a/Documentation/technical/index-format.txt +++ b/Documentation/technical/index-format.txt @@ -337,3 +337,21 @@ The remaining data of each directory block is grouped by type: SHA-1("TREE" + <binary representation of N> + "REUC" + <binary representation of M>) + +== Index Entry Offset Table + + The Index Entry Offset Table (IEOT) is used to help address the CPU + cost of loading the index by enabling multi-threading the process of + converting cache entries from the on-disk format to the in-memory format. + The signature for this extension is { 'I', 'E', 'O', 'T' }. + + The extension consists of: + + - 32-bit version (currently 1) + + - A number of index offset entries each consisting of: + + - 32-bit offset from the begining of the file to the first cache entry + in this block of entries. + + - 32-bit count of cache entries in this block |