Less copying during dist installation #1744
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Per rust-lang#904 copying the contents of dists out of the extracted staging directory and then later deleting that same staging directory consumes 60s out of a total of 200s on Windows. Wall clock testing shows this patch reduces `rustup toolchain install nightly` from 3m45 to 2m23 for me - including download times etc. I'm sure there is more that can be done, thus I'm not marking this as a closing merge for rust-lang#904.
kinnison
approved these changes
Apr 9, 2019
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Over all, I think this looks good. I like the cleanup for dest_abs_path() and the copy-vs-move semantics seem sound to me.
If at all possible, I'd love to see if @brson has enough memory of this code area to comment, otherwise given the tests are green I'm okay for merging this.
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I can confirm that this branch has been working fine for me in local testing for 2 days. |
This was referenced Apr 14, 2019
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Per #904 copying the contents of dists out of the extracted staging
directory and then later deleting that same staging directory consumes
60s out of a total of 200s on Windows.
Wall clock testing shows this patch reduces
rustup toolchain install nightlyfrom 3m45 to 2m23 for me - includingdownload times etc.
I'm sure there is more that can be done, thus I'm not marking this as
a closing merge for #904.