Performance
| Operation | magmalake | Reference |
|---|---|---|
| zstd decompress FFI — this measures libzstd, not Mojo | 11.1–32.9 GB/s | the range spans compression levels and compressible versus random input |
scroll the table sideways →
Apple M4 — ten cores, four of them performance — macOS, stable Mojo 1.0.0, with nothing else building on the machine. Measured on 5 September 2026; the Iceberg rows on 15 September, the boundary rows on 19 September. How these were measured.
Found by profiling
A dlopen on every single decompress call. About 450 µs per call, spent opening a library that was already open.
Every merge also runs its benchmarks on a GitHub runner: the benchmark history. Read it for trends; a shared runner is slower and noisier than the table.