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Changelog

0.3.0 (2019-02-04)

  • Add custom color scheme for generated flamegraphs.
  • Automatically demunge Java and Clojure frames in the output.
  • Add :transform <fn> capability to specify a custom transform function to post-process the collected stacks.
  • Add :threads true option to generate stacks for each thread separately.
  • BREAKING: remove arities that take an explicit PID argument. If you want to profile another process, pass :pid <PID> argument to any profiling function.

0.2.2 (2019-01-16)

  • Update vendored async-profiler libraries to 1.5. Big features of the new async-profiler:
    • Native stack traces on macOS.
    • Wall-clock profiler: pass :event :wall to the profiling command.
  • Ship prebuilt library for Linux ARM platform.
  • Fix profile generating flamegraph twice.
  • Avoid illegal access warning on JDK9+.
  • #1: Don't create flamegraph file if profiler was not running.

0.2.1 - botched release

0.2.0 (2018-11-21)

  • Update vendored async-profiler libraries to 1.4. From now on, clj-async-profiler ships binaries prebuilt by async-profiler maintainers themselves, no longer building them manually.
  • Deprecate arities in user-facing functions that take explicit pid argument. Instead, they now retrieve :pid value from the option map. If the value is not present, use the current process as profiler target.
  • Add default arity without options map for each user-facing function.
  • Add profile macro which runs the profiler exactly for the duration of body.
  • Make it possible to use clj-async-profiler outside of REPL environment (see clojure-goes-fast/clj-memory-meter#2 for context).
  • Make the profiled event configurable through options.
  • BREAKING: profile-for no longer returns a future, instead it blocks the current thread for the specified duration. You can still wrap this call in (future ...) manually if needed.

0.1.3 (2018-04-13)

  • #1: Fix problems with starting the profiler with Leiningen on Linux.
  • #3: Add a more informative message in case of missing agent dependencies.

0.1.2 (2018-02-09)

New options for stop and profile-for:

  • :min-width - a number in pixels to limit the minimal width of a stackframe. Use this if the resulting flamegraph is too big and hangs your browser. Recommended value is from 1 to 5.
  • :reverse? - if true, generate the reverse flamegraph which grows from callees up to callers.
  • :icicle? - if true, invert the flamegraph upside down.

0.1.0 (2017-12-11)

The initial release of clj-async-profiler. Includes the ability to start and stop the profiler manually, profile for a period of time, and generate flamegraphs from the profiled data.