Buildprof 0.2.8

Buildprof records every process a build starts and every file it opens, and shows the whole build on an interactive timeline in your browser.

Changes

Fixed

• Builds no longer run with SIGPIPE ignored. Buildprof passed its own
  ignored SIGPIPE on to the command it recorded, so pipelines such as
  sort | head -n 1 printed "Broken pipe" errors instead of exiting quietly.

Install

Recording requires Linux. Existing recordings can be viewed on other
platforms in the web UI without installing Buildprof. Install on your Linux
build machine using whichever method you prefer:

Shell script

curl -fsSL https://buildprof.lalitm.com/install.sh | sh

Homebrew

brew install lalitmaganti/tap/buildprof

mise

mise use -g github:LalitMaganti/buildprof

Downloads

File	Platform	Checksum
buildprof-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
buildprof-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
buildprof-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
buildprof-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum
buildprof-aarch64-unknown-linux-musl.tar.xz	ARM64 MUSL Linux	checksum
buildprof-x86_64-unknown-linux-musl.tar.xz	x64 MUSL Linux	checksum

Buildprof 0.2.7

Buildprof records every process a build starts and every file it opens, and shows the whole build on an interactive timeline in your browser.

Changes

Fixed

• --compiler-traces no longer hangs when a compiler launcher such as ccache
  is on PATH. The launcher works out which compiler to run by looking its
  own name up on PATH again, where it found Buildprof's wrapper, which
  handed straight back to the launcher.

Install

Recording requires Linux. Existing recordings can be viewed on other
platforms in the web UI without installing Buildprof. Install on your Linux
build machine using whichever method you prefer:

Shell script

curl -fsSL https://buildprof.lalitm.com/install.sh | sh

Homebrew

brew install lalitmaganti/tap/buildprof

mise

mise use -g github:LalitMaganti/buildprof

Downloads

File	Platform	Checksum
buildprof-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
buildprof-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
buildprof-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
buildprof-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum
buildprof-aarch64-unknown-linux-musl.tar.xz	ARM64 MUSL Linux	checksum
buildprof-x86_64-unknown-linux-musl.tar.xz	x64 MUSL Linux	checksum

Buildprof 0.2.6

Buildprof records every process a build starts and every file it opens, and shows the whole build on an interactive timeline in your browser.

Changes

Added

• A GitHub Action that records builds, uploads traces, and adds elapsed time,
  exit status, and a download link to the job summary, including failed builds.
• A Nix flake with a package and development shell.
• Conformance coverage for npm, Bazel, and Buck2 builds.

Fixed

• Filesystem tracing now records legacy open syscalls on x86_64, including
  those used by Alpine Linux builds inside containers.

Install

Recording requires Linux. Existing recordings can be viewed on other
platforms in the web UI without installing Buildprof. Install on your Linux
build machine using whichever method you prefer:

Shell script

curl -fsSL https://buildprof.lalitm.com/install.sh | sh

Homebrew

brew install lalitmaganti/tap/buildprof

mise

mise use -g github:LalitMaganti/buildprof

Downloads

File	Platform	Checksum
buildprof-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
buildprof-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
buildprof-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
buildprof-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum
buildprof-aarch64-unknown-linux-musl.tar.xz	ARM64 MUSL Linux	checksum
buildprof-x86_64-unknown-linux-musl.tar.xz	x64 MUSL Linux	checksum

Buildprof 0.2.5

Buildprof records every process a build starts and every file it opens, and shows the whole build on an interactive timeline in your browser.

Changes

Added

• Messages are coloured when they go to a terminal: errors red, hints yellow,
  and paths, URLs, and commands highlighted. NO_COLOR turns colour off and
  CLICOLOR_FORCE turns it on for pipes.
• The report printed after a recording is set apart from the build's output
  and is shorter: a headline, the port forward and URL on their own lines
  over SSH, the browser permission note, and the wait.

Fixed

• --compiler-traces now collects nightly Rust self-profile data whenever
  the build runs a nightly compiler, including through cargo +nightly or a
  rust-toolchain file. The nightly check used to look only at the default
  toolchain at startup, so those recordings had no compiler tracks.

Changed

• The one-request server that hands a trace to the browser is now built on
  tiny_http instead of hand-written HTTP parsing.
• While the UI waits for a trace from this machine, a dialog explains the
  browser prompt to access other apps and services on this device. The CLI,
  README, and error dialogs name the site setting that re-allows it: "Apps on
  device" in Chrome, "Access this device" in Firefox.

Install

Recording requires Linux. Existing recordings can be viewed on other
platforms in the web UI without installing Buildprof. Install on your Linux
build machine using whichever method you prefer:

Shell script

curl -fsSL https://buildprof.lalitm.com/install.sh | sh

Homebrew

brew install lalitmaganti/tap/buildprof

mise

mise use -g github:LalitMaganti/buildprof

Downloads

File	Platform	Checksum
buildprof-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
buildprof-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
buildprof-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
buildprof-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum
buildprof-aarch64-unknown-linux-musl.tar.xz	ARM64 MUSL Linux	checksum
buildprof-x86_64-unknown-linux-musl.tar.xz	x64 MUSL Linux	checksum

Buildprof 0.2.4

Buildprof records every process a build starts and every file it opens, and shows the whole build on an interactive timeline in your browser.

Changes

Changed

• The UI no longer probes localhost for a native Trace Processor when it
  starts. Chrome asked for permission to access other apps and services on
  the device for that probe before any trace was opened, and blocking it
  silently broke loading traces from the CLI.
• The CLI explains that Chrome permission prompt while it waits for the
  browser to fetch a trace, and how to recover after blocking it.
• When the UI fetches a trace from this machine, the loading page says to
  allow that prompt. If the fetch fails, the error says whether Chrome is
  blocking the site or nothing answered, and how to recover, instead of the
  generic download error.

Install

Recording requires Linux. Existing recordings can be viewed on other
platforms in the web UI without installing Buildprof. Install on your Linux
build machine using whichever method you prefer:

Shell script

curl -fsSL https://buildprof.lalitm.com/install.sh | sh

Homebrew

brew install lalitmaganti/tap/buildprof

mise

mise use -g github:LalitMaganti/buildprof

Downloads

File	Platform	Checksum
buildprof-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
buildprof-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
buildprof-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
buildprof-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum
buildprof-aarch64-unknown-linux-musl.tar.xz	ARM64 MUSL Linux	checksum
buildprof-x86_64-unknown-linux-musl.tar.xz	x64 MUSL Linux	checksum

Buildprof 0.2.3

Buildprof records every process a build starts and every file it opens, and shows the whole build on an interactive timeline in your browser.

Changes

Added

• --no-file-events records the process timeline without filesystem tracing,
  reducing overhead for builds that open many files. Compiler tracing remains
  independently selectable.
• Recordings carry their collection settings. The UI indicates when file
  events were not recorded and explains why file lists and dependency links
  are unavailable. Older recordings continue to open.

Changed

• Event names and categories are written once per trace and referenced by id
  from each event, instead of being repeated as strings on every event. Traces
  are smaller and load faster; nothing changes in what the UI shows.

Install

Recording requires Linux. Existing recordings can be viewed on other
platforms in the web UI without installing Buildprof. Install on your Linux
build machine using whichever method you prefer:

Shell script

curl -fsSL https://buildprof.lalitm.com/install.sh | sh

Homebrew

brew install lalitmaganti/tap/buildprof

mise

mise use -g github:LalitMaganti/buildprof

Downloads

File	Platform	Checksum
buildprof-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
buildprof-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
buildprof-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
buildprof-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum
buildprof-aarch64-unknown-linux-musl.tar.xz	ARM64 MUSL Linux	checksum
buildprof-x86_64-unknown-linux-musl.tar.xz	x64 MUSL Linux	checksum

Buildprof 0.2.2

Buildprof records every process a build starts and every file it opens, and shows the whole build on an interactive timeline in your browser.

Changes

Changed

• The UI no longer calls out a recorder that differs from it only in the
  patch version; patch releases never change the trace format.
• Release notes list the same install options as the README, followed by the
  version's changelog section.

Fixed

• .deb and .rpm packages for aarch64 are built on an arm64 runner instead
  of failing the sanity check on x86_64.

Install

Recording requires Linux; the macOS build only opens traces. Use whichever of
these you already have:

Shell script

curl -fsSL https://buildprof.lalitm.com/install.sh | sh

Homebrew

brew install lalitmaganti/tap/buildprof

mise

mise use -g github:LalitMaganti/buildprof

Downloads

File	Platform	Checksum
buildprof-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
buildprof-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
buildprof-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
buildprof-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum
buildprof-aarch64-unknown-linux-musl.tar.xz	ARM64 MUSL Linux	checksum
buildprof-x86_64-unknown-linux-musl.tar.xz	x64 MUSL Linux	checksum

Buildprof 0.2.1

Buildprof records every process a build starts and every file it opens, and shows the whole build on an interactive timeline in your browser.

Changes

Fixed

• The static musl builds compile again; the ptrace request type differs
  between glibc and musl.
• Releases are created as drafts titled Buildprof <version> for review.
  Publishing one triggers the UI deploy, the crates.io publish, and the
  Linux packages, which a release published by automation never did.

Install

Recording requires Linux; the macOS build only opens traces. Use whichever of
these you already have:

Shell script

curl -fsSL https://buildprof.lalitm.com/install.sh | sh

Homebrew

brew install lalitmaganti/tap/buildprof

mise

mise use -g github:LalitMaganti/buildprof

Downloads

File	Platform	Checksum
buildprof-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
buildprof-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
buildprof-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
buildprof-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum
buildprof-aarch64-unknown-linux-musl.tar.xz	ARM64 MUSL Linux	checksum
buildprof-x86_64-unknown-linux-musl.tar.xz	x64 MUSL Linux	checksum

Buildprof 0.2.0

Buildprof records every process a build starts and every file it opens, and shows the whole build on an interactive timeline in your browser.

Changes

Added

• buildprof.version and buildprof.trace_format trace attributes, visible
  in Trace Processor's metadata table, so the UI can tell which recorder
  wrote a trace.
• SSH sessions print the ssh -L port forward to run from your own machine
  instead of trying to launch a browser on the build host.
• --wait <SECONDS> bounds how long Buildprof waits for a browser to fetch a
  trace (default 600; 0 waits forever).
• buildprof examples and buildprof open --example <NAME> open recordings
  hosted next to the UI.
• Clear messages when ptrace or seccomp is unavailable (Docker without
  SYS_PTRACE, Yama ptrace_scope 3, gVisor), when the command cannot be
  executed, and when port 9001 is already taken.
• Prebuilt binaries on GitHub Releases for x86_64 and aarch64 Linux (glibc
  2.28 or newer, plus static musl builds) and for macOS, with a shell
  installer, a Homebrew tap, .deb and .rpm packages, and mise support.
• Every released UI is deployed permanently under
  https://buildprof.lalitm.com/v<version>/; the CLI opens the UI matching
  its own version and the UI links to the matching version when a trace was
  recorded by a different release.

Changed

• Traces are now written as a single zstd stream, typically 9 to 20 times
  smaller than before. The UI detects the compression from the file's magic
  bytes and the .buildprof extension is unchanged. Querying a trace directly
  needs a Trace Processor build from July 2026 or later; the perfetto Python
  package's bundled build is older, so pass
  TraceProcessorConfig(fetch_latest_trace_processor=True) for now.
• Building from source now requires Rust 1.91.

Install

Recording requires Linux; the macOS build only opens traces. Use whichever of
these you already have:

Shell script

curl -fsSL https://buildprof.lalitm.com/install.sh | sh

Homebrew

brew install lalitmaganti/tap/buildprof

mise

mise use -g github:LalitMaganti/buildprof

Downloads

File	Platform	Checksum
buildprof-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
buildprof-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
buildprof-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
buildprof-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum
buildprof-aarch64-unknown-linux-musl.tar.xz	ARM64 MUSL Linux	checksum
buildprof-x86_64-unknown-linux-musl.tar.xz	x64 MUSL Linux	checksum