This vector type has served us well for now, but it contains internal refcounts
which are incompatible with upcoming changes related to garbage collection.
The performance impact of this change within all benchmarks I ran was within the
margin of error:
[nix-shell:/tmp/perf]$ hyperfine "./before -E '(import <nixpkgs> {}).firefox.outPath' --log-level ERROR --no-warnings"
Benchmark 1: ./u64 -E '(import <nixpkgs> {}).firefox.outPath' --log-level ERROR --no-warnings
Time (mean ± σ): 7.528 s ± 0.272 s [User: 6.578 s, System: 0.631 s]
Range (min … max): 7.160 s … 8.012 s 10 runs
nix-shell:/tmp/perf]$ hyperfine "./std-vec -E '(import <nixpkgs> {}).firefox.outPath' --log-level ERROR --no-warnings"
Benchmark 1: ./std-vec -E '(import <nixpkgs> {}).firefox.outPath' --log-level ERROR --no-warnings
Time (mean ± σ): 7.515 s ± 0.178 s [User: 6.508 s, System: 0.652 s]
Range (min … max): 7.276 s … 7.861 s 10 runs
Change-Id: Ib95f871956e336a1e5771f6293583854b1efb276
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12197
Reviewed-by: aspen <root@gws.fyi>
Tested-by: BuildkiteCI
adf9b4c54a