Comment by knuckleheads
3 days ago
Result:
Headstart on codex-rs (16 cores, clean builds, median of 3 alternating off/on pairs):
off on saved
cargo check 383.8s 277.1s 28%
cargo build 530.7s 330.8s 38%
check, -Zthreads=8 220.0s 190.5s 13%
build, -Zthreads=8 317.3s 249.2s 21%
Not helpful for compilation yet, but it's something :)
Do you see much benefit on incremental builds too, or is this mostly a clean-build win?
Depends on what you are editing I would say, if it's something deeper in the stack then it should help. The last numbers I have is that this is a 6-8% improvement for incremental editing of the code for cargo itself, but I'm having the benchmark be rerun now, as I've landed a fair amount of changes since then.