On Thu, Feb 8, 2018 at 9:37 PM, Derrick Stolee <stolee@xxxxxxxxx> wrote:
> Teach git-commit-graph to read commits from stdin when the
> --stdin-commits flag is specified. Commits reachable from these
> commits are added to the graph. This is a much faster way to construct
> the graph than inspecting all packed objects, but is restricted to
> known tips.
>
> For the Linux repository, 700,000+ commits were added to the graph
> file starting from 'master' in 7-9 seconds, depending on the number
> of packfiles in the repo (1, 24, or 120).
It seems something went wrong with '--stdin-commits' in v3, look:
~/src/git (commit-graph-v2 %)$ time { git rev-parse HEAD | ./git
commit-graph --write --update-head --stdin-commits ; }
ee3223fe116bf7031a6c1ad6d41e0456beefa754
real 0m1.199s
user 0m1.123s
sys 0m0.024s
~/src/git (commit-graph-v3 %)$ time { git rev-parse HEAD | ./git
commit-graph write --update-head --stdin-commits ; }
ee3223fe116bf7031a6c1ad6d41e0456beefa754
real 0m30.766s
user 0m29.120s
sys 0m0.546s
