Hi,
I am running git-p4 to import around 11147 changes from perforce, it has done 38% in 4h39m. Wonder if it would have been faster to get a bunch of changes in parallel and import them sequentially. I do understand that importing of full history does not happen too often by still it might be a good idea.
Have a multi-threaded fetcher from source SCM and dump it in some format locally. git fast-import can pull it from the local at its own speed (which will be real fast). Basically, I am suggesting better using the available bandwidth and CPU resources for doing network IO.
-dhruva
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