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I made a build profiler to understand Bun’s compile times

Lalit Maganti · published 12 September 2026

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Host
https://github.com/lalitMaganti/buildprof
github.com
https://x.com/jarredsumner/status/2090619419059974620
x.com
https://github.com/oven-sh/bun/releases/tag/bun-v1.3.14
github.com
https://github.com/oven-sh/bun/releases/tag/bun-v1.4.0
github.com
https://github.com/LalitMaganti/blog-code/tree/main/buildprof-bun
github.com
https://github.com/LalitMaganti/blog-code/blob/main/buildprof-bun/scripts/record-original-zig-ci.sh
github.com
https://github.com/LalitMaganti/blog-code/blob/main/buildprof-bun/scripts/record-zig-full-lto-link-detail.sh
github.com
https://github.com/LalitMaganti/blog-code/blob/main/buildprof-bun/patches/zig-thinlto.patch
github.com
https://github.com/oven-sh/WebKit/tree/5488984d20e0dbfe4be2c3ba8fb18eb81a5e0e8b
github.com
https://github.com/oven-sh/WebKit/blob/5488984d20e0dbfe4be2c3ba8fb18eb81a5e0e8b/Dockerfile
github.com
https://github.com/oven-sh/WebKit/blob/0f966e81b78c84bb/Dockerfile
github.com
https://github.com/LalitMaganti/blog-code/blob/main/buildprof-bun/scripts/capture-bun-cold-prebuilt.sh
github.com
https://github.com/LalitMaganti/blog-code/blob/main/buildprof-bun/scripts/capture-bun-compiler-detail.sh
github.com
https://github.com/google/perfetto
github.com
https://ui.perfetto.dev
ui.perfetto.dev
https://perfetto.dev/docs/contributing/ui-plugins
perfetto.dev
https://github.com/nico/ninjatracing
github.com
https://ui.perfetto.dev/
ui.perfetto.dev
https://doc.rust-lang.org/cargo/reference/timings.html
doc.rust-lang.org
https://clang.llvm.org/docs/ClangCommandLineReference.html
clang.llvm.org
https://ziglang.org/learn/overview/
ziglang.org
https://strace.io/
strace.io
https://github.com/kxxt/tracexec
github.com
I Made A Real-Time Build Visualizer Read at the source ↗
danielchasehooper.com
https://news.ycombinator.com/item?id=44902127
news.ycombinator.com
https://github.com/LalitMaganti/buildprof/issues/2
github.com
https://github.com/LalitMaganti/buildprof/issues/3
github.com
https://github.com/LalitMaganti/buildprof/issues
github.com
https://github.com/LalitMaganti/buildprof
github.com
https://eel.is/c++draft/lex.separate
eel.is
https://doc.rust-lang.org/reference/crates-and-source-files.html
doc.rust-lang.org
https://doc.rust-lang.org/rustc/codegen-options/
doc.rust-lang.org
Zig's New Relationship with LLVM Read at the source ↗
kristoff.it
https://github.com/oven-sh/bun/blob/0d9b296af33f2b851fcbf4df3e9ec89751734ba4/scripts/build/zig.ts
github.com
https://github.com/oven-sh/bun/blob/bun-v1.3.14/.buildkite/ci.mjs
github.com
https://buildkite.com/home/
buildkite.com
https://github.com/LalitMaganti/blog-code/blob/main/buildprof-bun/results/compiler-events/zig-full-lto-javascriptcore-event.png
github.com
https://github.com/LalitMaganti/blog-code/blob/main/buildprof-bun/experiments/webkit-thinlto/record-comparison.sh
github.com
https://android.googlesource.com/kernel/common/+/3135f5b73592988af0eb1b11ccbb72a8667be201/include/uapi/linux/capability.h
android.googlesource.com
https://www.kernel.org/doc/html/latest/trace/ftrace.html
kernel.org
https://github.com/LalitMaganti/blog-code/blob/main/buildprof-bun/results/overhead/measure-options.py
github.com
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