These are full crate graph timings. Links lead to cargo -Ztiming output. Master is a non-parallel-enabled compiler.

Deltas (X - master) Average CPU Usage (%)
Name masterparallel t-8parallel t-16 some blank t-8 t-16 some blank masterparallel t-8parallel t-16
cargo-check 35.7s 24.0s 26.2s
cargo-debug 61.0s 49.1s 50.9s
cargo-opt 97.3s 86.4s 87.5s

script-servo-check 313.9s 273.2s 287.5s
script-servo-debug 563.8s 511.5s 519.3s
script-servo-opt 558.4s 515.0s 536.4s

sccache-check 31.1s 23.5s 27.8s
sccache-debug 49.3s 41.9s 46.5s
sccache-opt 85.0s 79.5s 82.0s

rustc-std-check 21.4s 11.1s 10.3s
rustc-std-opt 29.1s 18.5s 18.3s

rustc-compiler-check 75.8s 46.4s 46.3s
rustc-compiler-opt 265.0s 236.4s 217.2s

rustc-codegen-check 7.3s 5.9s 5.9s
rustc-codegen-opt 37.4s 35.3s 35.1s