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rustdoc-json: buffer output by aDotInTheVoid · Pull Request #93954 · rust-lang/r...
source link: https://github.com/rust-lang/rust/pull/93954
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It turns out we were doing syscalls for each part of the json syntax
Before:
...
[pid 1801267] write(5, "\"", 1) = 1
[pid 1801267] write(5, ",", 1) = 1
[pid 1801267] write(5, "\"", 1) = 1
...
After:
[pid 1974821] write(5, "{\"root\":\"0:0\",\"crate_version\":nu"..., 1575) = 1575
In one benchmark (one struct, almost all time in std), this gives ~2x perf
r? @CraftSpider
@rustbot modify labels: +A-rustdoc-json +T-rustdoc -A-testsuite
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