- New index page design.
- Add diffgraph generation buttons to the web UI.
- Try to prevent horizontal scrollbar appearing on flamegraph.
- Fix tooltip getting clipped at the bottom of the screen.
- async-profiler#932: Fix SIGSEVG crash on JDK23.
- Update diffgraph color palette.
- Implement custom frame tooltip instead of the native on-hover tooltip.
- Close context menu by pressing Escape.
- #37: Fix load crashing when the profiler is compiled with AOT.
- Remove support for
:return-file
option inprofile
macro. - Add special
:all
shortcut to select all features.
- Big sidebar redesign (details).
- Fix the current view resetting when the flamegraph becomes inactive.
- Work around a bug in Chrome that caused the rendered flamegraph to become blank if the user switches away and back to the flamegraph tab.
- Update vendored async-profiler libraries to 3.0.
- Remove dedicated musl binary and special handling for musl-based distros (Linux x64 now handles both glibc and musl).
- Add support for optional async-profiler features (currently supported:
:vtable
and:comptask
). - Add support for new event type
:ctimer
which doesn't require perf_events (so it works in limited permission containers) but is more accurate than:itimer
. Note that:ctimer
is only supported on Linux. - BREAKING: Remove
serve-files
which has been deprecated since version 1.0.1. Useserve-ui
instead.
- Fix "Hide frames below" transform being stuck in an endless loop.
- Add
print-jvm-opt-for-startup-profiling
to simplify setting up startup profiling with async-profiler and then render the results with clj-async-profiler. - Add right-click menu for frames to automatically generate common transforms.
- In dynamic transforms, the stack string now includes leading and trailing
semicolons (i.e.
;frame1;frame2;frame3;
) for easier matching of frame boundaries. - #28: Customize output dir via a Java property.
- Update vendored async-profiler libraries to 2.9.
- Diffgraphs are now non-normalized by default (which is, probably, a less surprising behavior).
- Add a button to copy the title of the currently selected frame to make writing transforms easier.
- Add
clj-async-profiler.ui/stop-server
function for shutting down the Web UI HTTP server.
- Fix diffgraphs incorrectly calculating deltas for topmost frames.
- Add ability to toggle sidebar visibility using query params.
- Sort frames by width by default.
- Update vendored async-profiler libraries to 2.8.3.
- Add a new function
clj-async-profiler.core/serve-ui
which supersedesserve-files
.serve-ui
takes an explicithost
argument. Ifhost
is not provided,localhost
is used by default (used to be0.0.0.0
). - The now deprecated
serve-files
still binds to0.0.0.0
to retain compatibility.
- BREAKING: Replace SVG flamegraphs with HTML flamegraphs. It is not possible to generate SVG flamegraphs anymore.
- Add dynamic configuration into the flamegraph. User can now change the
following without regenerating a flamegraph:
- minimal frame width
- frame sort order
- normal/inverse orientation (for icicles graphs)
- stack transforms
- Remove the following options passed to
generate-flamegraph
::reverse?
,:icicle?
,:width
,:height
,:min-width
. These options are no longer needed at generation time since they are configurable within the HTML flamegraph itself. - Introduce
:predefined-transforms
option that bakes the provided transforms into the generated HTML (see docstring forclj-async-profiler.core/stop
). - Enable browser caching of flamegraph files. Repeated opening of the same flamegraph in browser will no longer refetch the file from the server.
- Rewrite stack post-processing code into Java for faster generation of flamegraphs.
- Fix the 10-something second delay on MacOS when starting the profiler for the first time.
- Update vendored async-profiler libraries to 2.8.2.
- Add prepackaged binary for Linux x64 MUSL libc.
- BREAKING: Remove prepackaged binaries for Linux x86 and Linux ARMv7 (arm32) since async-profiler no longer ships them. These platforms continue to be supported but you'll have to build binaries for them manually.
- Update vendored async-profiler libraries to 1.8.6.
- Add prepackaged binaries for Linux x86 and Linux AArch64.
- Add early access prepackaged binary for MacOS AArch64 (M1). Note that this is not an experimental version.
- Update vendored async-profiler libraries to 1.8.2.
- Add ability to customize the frame buffer size with
:framebuf
option tostart
andprofile
. - Add ability to set default profiling/rendering options.
- Update vendored async-profiler libraries to 1.6.
- Fix the bug with Clojure special characters not being properly demunged in stackframes.
- Add support for differential profiles.
- Refine browser UI.
- Allow to pass profiler run IDs instead of full filenames to
generate-*
functions. - Change the format of generated filenames. They now include a run ID and event type.
- #10: Add
support for SVG's
width
andheight
options.
- #9: Fix out-of-bounds string access when demunging stackframes.
- 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.
- 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.
- 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 ofbody
. - 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.
- #1: Fix problems with starting the profiler with Leiningen on Linux.
- #3: Add a more informative message in case of missing agent dependencies.
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.
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.