Clarification

[drahnr]

Hey there, I am a contributor to sccache and initiator of cachepot and just stumbled upon this project.

Could you clarify how exactly the speedup gains are achieved? The README.md doesn't explain that and I see that under the hood it builds upon the sccache binary artifact.

CC @Xanewok

[suptejas]

Sure - here's a rough breakdown of how we optimize performance:

Across All OS's:
Ramdisk (if the user is using a hard disk) OR always if the user is using WSL (3x speed improvement from our benchmarks)
Sccache (cache pre-compiled crates, especially effective with speeding up incremental builds at multi-crate cargo workspaces)
Share-generics (might be made optional soon, as our issues indicate we're trying to move to stable): -Zshare-generics=y

Increasing codegen-units, turning opt-level to 0 for debug builds.

Linux:
LLD (We're looking to change this to mold soon) Linker
Clang

Windows:
rust-lld.exe

MacOS:
ZLD Linker
-Csplit-debuginfo=unpacked

[suptejas]

On a different note, cachepot looks super cool 😄

[Lencof]