feat(profiling): add dev-profiling Cargo profile for fast iteration#284
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streamer45 merged 1 commit intomainfrom Apr 11, 2026
Merged
feat(profiling): add dev-profiling Cargo profile for fast iteration#284streamer45 merged 1 commit intomainfrom
streamer45 merged 1 commit intomainfrom
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Add a 'dev-profiling' Cargo profile that inherits from 'dev' with opt-level 2. This gives meaningful profiles (inlining, vectorisation) without the expensive LTO link step, and benefits from incremental compilation for fast rebuilds. Two profiling modes are now available: Dev (fast): just skit-profiling-dev serve Release (accurate): just skit-profiling serve The dev mode drops target-cpu=native (vs release) so the cache stays stable across rebuilds. Both modes enable frame pointers for pprof and share the same HTTP profiling endpoints. Signed-off-by: StreamKit Devin <devin@streamkit.dev> Co-Authored-By: Claudio Costa <cstcld91@gmail.com>
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Summary
Adds a
dev-profilingCargo profile and corresponding justfile recipes so profiling no longer requires a full release-lto build. Two profiling modes are now available:dev-profiling)release-lto)just skit-profiling-dev servejust skit-profiling servetarget-cpu=nativeCargo.toml: New
[profile.dev-profiling]inheriting fromdevwithopt-level = 2. Inherits the existing per-package codec overrides (rav1e, rav1d at opt-level 3) and incremental compilation. No LTO means no expensive link step.justfile:
build-skit-profiling-devandskit-profiling-devrecipesBoth modes enable the same
--features profiling(pprof + jemalloc) and share the same HTTP profiling endpoints (profile-fetch,profile-web,profile-flame,heap-profile-*).Review & Testing Checklist for Human
just skit-profiling-dev servecompiles and starts significantly faster thanjust skit-profiling serveon your machine (the main goal of this PR)just skit-profiling servestill works identically to before (only doc comment changes)Notes
-C target-cpu=nativeto keep the compilation cache stable between regular dev builds and profiling builds. If you want native SIMD tuning in dev profiles, you can manually run withRUSTFLAGS="-C force-frame-pointers=yes -C target-cpu=native".dev-profilingbuild populates the cache, subsequent rebuilds benefit from incremental compilation — only changed workspace crates are recompiled.Link to Devin session: https://staging.itsdev.in/sessions/de77f5d7265a47dcb8c782c9fe08e6e6
Requested by: @streamer45