Optimize CreateDigest implementation. (Cherry-pick of #16617)
#16648
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Closes pantsbuild#16570 * Use a `DigestTrie` to create all snapshots at once, instead of creating them individually * Store all in-memory file contents in a single (batched) call, instead of storing them individually [ci skip-build-wheels] --- I restored the benchmark script from pantsbuild#14569 to test this. | size | create_digest_before | create_digest_after | | --- | --- | --- | | 20000 | 608 | 130 | | 40000 | 1164 | 268 | | 60000 | 2260 | 475 | | 80000 | 3582 | 674 | | 100000 | 5085 | 862 | | 120000 | 6765 | 1057 | | 140000 | 8818 | 1067 | | 160000 | 10752 | 1361 | | 180000 | 12619 | 1604 |
stuhood
approved these changes
Aug 25, 2022
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Closes #16570
DigestTrieto create all snapshots at once, instead of creating them individually[ci skip-build-wheels]
I restored the benchmark script from #14569 to test this.