This version of the patch merges in Duy's work to speed up index v4 decoding. I had to massage it a bit to get it to work with the multi-threading but its still largely his code. It helps a little (3%-4%) when the cache entry thread(s) take the longest and not when the index extensions loading is the long thread.
I also added a minor cleanup patch to minimize the casting required when working with the memory mapped index and other minor changes based on the feedback received. Base Ref: v2.19.0 Web-Diff: https://github.com/benpeart/git/commit/9d31d5fb20 Checkout: git fetch https://github.com/benpeart/git read-index-multithread-v4 && git checkout 9d31d5fb20 ### Patches Ben Peart (4): eoie: add End of Index Entry (EOIE) extension read-cache: load cache extensions on a worker thread read-cache: speed up index load through parallelization read-cache: clean up casting and byte decoding Nguyễn Thái Ngọc Duy (1): read-cache.c: optimize reading index format v4 Documentation/config.txt | 6 + Documentation/technical/index-format.txt | 23 + config.c | 18 + config.h | 1 + read-cache.c | 581 +++++++++++++++++++---- 5 files changed, 531 insertions(+), 98 deletions(-) base-commit: 1d4361b0f344188ab5eec6dcea01f61a3a3a1670 -- 2.18.0.windows.1
