Loader for 3.0 (v9): Binary launcher and AsyncGetCallTrace replacement

ap-loader v9

• Fix FlameGraph converter #22

The following is copied from the wrapped async-profiler release by Andrei Pangin. The source code linked below should be ignored.

v3.0

Features

• #724: Binary launcher asprof
• #751: Profile non-Java processes
• #795: AsyncGetCallTrace replacement
• #719: Classify execution samples into categories in JFR converter
• #855: ctimer mode for accurate profiling without perf_events
• #740: Profile CPU + Wall clock together
• #736: Show targets of vtable/itable calls
• #777: Show JIT compilation task
• #644: RISC-V port
• #770: LoongArch64 port

Improvements

• #733: Make the same libasyncProfiler work with both glibc and musl
• #734: Support raw PMU event descriptors
• #759: Configure alternative profiling signal
• #761: Parse dynamic linking structures
• #723: --clock option to select JFR timestamp source
• #750: --jfrsync may specify a list of JFR events
• #849: Parse concatenated multi-chunk JFRs
• #833: Time-to-safepoint JFR event
• #832: Normalize names of hidden classes / lambdas
• #864: Reduce size of HTML Flame Graph
• #783: Shutdown asprof gracefully on SIGTERM
• Better demangling of C++ and Rust symbols
• DWARF unwinding for ARM64
• JfrReader can parse in-memory buffer
• Support custom events in JfrReader
• An option to read JFR file by chunks
• Record GCHeapSummary events in JFR

Bug fixes

• Workaround macOS crashes in SafeFetch
• Fixed attach to OpenJ9 on macOS
• Support UseCompressedObjectHeaders aka Lilliput
• Fixed allocation profiling on JDK 20.0.x
• Fixed context-switches profiling
• Prefer ObjectSampler to TLAB hooks for allocation profiling
• Improved accuracy of ObjectSampler in --total mode
• Make Flame Graph status line and search results always visible
• loop and timeout options did not work in some modes
• Restart interrupted poll/epoll_wait syscalls
• Fixed stack unwinding issues on ARM64
• Workaround for stale jmethodIDs
• Calculate ELF base address correctly
• Do not dump redundant threads in a JFR chunk
• check action prints result to a file
• Annotate JFR unit types with @ContentType

Loader for 3.0 (v8): Binary launcher and AsyncGetCallTrace replacement

ap-loader v8

• Support for async-profiler 3.0
• Breaking changes with async-profiler 3.0:
  • async-profiler 3.0 changed the meaning of the --lib option from --lib path full path to libasyncProfiler.so in the container
    to -l, --lib prepend library names, so the AsyncProfilerLoader will throw an UnsupportedOperation exception
    when using the --lib option with a path argument and async-profiler 3.0 or higher

The following is copied from the wrapped async-profiler release by Andrei Pangin. The source code linked below should be ignored.

v3.0

Features

• #724: Binary launcher asprof
• #751: Profile non-Java processes
• #795: AsyncGetCallTrace replacement
• #719: Classify execution samples into categories in JFR converter
• #855: ctimer mode for accurate profiling without perf_events
• #740: Profile CPU + Wall clock together
• #736: Show targets of vtable/itable calls
• #777: Show JIT compilation task
• #644: RISC-V port
• #770: LoongArch64 port

Improvements

• #733: Make the same libasyncProfiler work with both glibc and musl
• #734: Support raw PMU event descriptors
• #759: Configure alternative profiling signal
• #761: Parse dynamic linking structures
• #723: --clock option to select JFR timestamp source
• #750: --jfrsync may specify a list of JFR events
• #849: Parse concatenated multi-chunk JFRs
• #833: Time-to-safepoint JFR event
• #832: Normalize names of hidden classes / lambdas
• #864: Reduce size of HTML Flame Graph
• #783: Shutdown asprof gracefully on SIGTERM
• Better demangling of C++ and Rust symbols
• DWARF unwinding for ARM64
• JfrReader can parse in-memory buffer
• Support custom events in JfrReader
• An option to read JFR file by chunks
• Record GCHeapSummary events in JFR

Bug fixes

• Workaround macOS crashes in SafeFetch
• Fixed attach to OpenJ9 on macOS
• Support UseCompressedObjectHeaders aka Lilliput
• Fixed allocation profiling on JDK 20.0.x
• Fixed context-switches profiling
• Prefer ObjectSampler to TLAB hooks for allocation profiling
• Improved accuracy of ObjectSampler in --total mode
• Make Flame Graph status line and search results always visible
• loop and timeout options did not work in some modes
• Restart interrupted poll/epoll_wait syscalls
• Fixed stack unwinding issues on ARM64
• Workaround for stale jmethodIDs
• Calculate ELF base address correctly
• Do not dump redundant threads in a JFR chunk
• check action prints result to a file
• Annotate JFR unit types with @ContentType

Loader for 2.9 (v8): Java Heap leak profiler

ap-loader v8

• Support for async-profiler 3.0

The following is copied from the wrapped async-profiler release by Andrei Pangin. The source code linked below should be ignored.

v2.9

Features

• Java Heap leak profiler
• meminfo command to print profiler's memory usage
• Profiler API with embedded agent as a Maven artifact

Improvements

• --include/--exclude options in the FlameGraph converter
• --simple and --dot options in jfr2flame converter
• An option for agressive recovery of [unknown_Java] stack traces
• Do not truncate signatures in collapsed format
• Display inlined frames under a runtime stub

Bug fixes

• Profiler did not work with Homebrew JDK
• Fixed allocation profiling on Zing
• Various jfrsync fixes
• Symbol parsing fixes
• Attaching to a container on Linux 3.x could fail

Loader for 2.9 (v7): Java Heap leak profiler

ap-loader v7

• Drop dev.dirs:directories dependency #13 (thanks to @jsjant for spotting the potential licensing issue and fixing it in #14)

The following is copied from the wrapped async-profiler release by Andrei Pangin. The source code linked below should be ignored.

v2.9

Features

• Java Heap leak profiler
• meminfo command to print profiler's memory usage
• Profiler API with embedded agent as a Maven artifact

Improvements

• --include/--exclude options in the FlameGraph converter
• --simple and --dot options in jfr2flame converter
• An option for agressive recovery of [unknown_Java] stack traces
• Do not truncate signatures in collapsed format
• Display inlined frames under a runtime stub

Bug fixes

• Profiler did not work with Homebrew JDK
• Fixed allocation profiling on Zing
• Various jfrsync fixes
• Symbol parsing fixes
• Attaching to a container on Linux 3.x could fail

Loader for 2.9 (v6): Java Heap leak profiler

ap-loader v6

• Fix Linux Arm64 release #12 (thanks to @dkrawiec-c for fixing this issue)

The following is copied from the wrapped async-profiler release by Andrei Pangin. The source code linked below should be ignored.

v2.9

Features

• Java Heap leak profiler
• meminfo command to print profiler's memory usage
• Profiler API with embedded agent as a Maven artifact

Improvements

• --include/--exclude options in the FlameGraph converter
• --simple and --dot options in jfr2flame converter
• An option for agressive recovery of [unknown_Java] stack traces
• Do not truncate signatures in collapsed format
• Display inlined frames under a runtime stub

Bug fixes

• Profiler did not work with Homebrew JDK
• Fixed allocation profiling on Zing
• Various jfrsync fixes
• Symbol parsing fixes
• Attaching to a container on Linux 3.x could fail

Loader for 2.9 (v5): Java Heap leak profiler

ap-loader v5

• Add new jattach methods (AsyncProfilerLoader.jattach(Path agent, String args)) to make using it programmatically easier
• Add new AsyncProfilerLoader.extractCustomLibraryFromResources(ClassLoader, String)
  method to extract a custom library from the resources
  • this also has a variant that looks in an alternative resource directory if the resource does not exist

The following is copied from the wrapped async-profiler release by Andrei Pangin. The source code linked below should be ignored.

v2.9

Features

• Java Heap leak profiler
• meminfo command to print profiler's memory usage
• Profiler API with embedded agent as a Maven artifact

Improvements

• --include/--exclude options in the FlameGraph converter
• --simple and --dot options in jfr2flame converter
• An option for agressive recovery of [unknown_Java] stack traces
• Do not truncate signatures in collapsed format
• Display inlined frames under a runtime stub

Bug fixes

• Profiler did not work with Homebrew JDK
• Fixed allocation profiling on Zing
• Various jfrsync fixes
• Symbol parsing fixes
• Attaching to a container on Linux 3.x could fail

Loader for 1.8.8 (v4): Maintenance release

ap-loader v4

• AsyncProfiler.isSupported() now returns false if the OS is not supported by any async-profiler binary, fixes #5

The following is copied from the wrapped async-profiler release by Andrei Pangin. The source code linked below should be ignored.

v1.8.8

Bug fixes

• Could not find NativeLibrary_load on JDK 11.0.15

Loader for 1.8.7 (v4): Maintenance release

ap-loader v4

• AsyncProfiler.isSupported() now returns false if the OS is not supported by any async-profiler binary, fixes #5

The following is copied from the wrapped async-profiler release by Andrei Pangin. The source code linked below should be ignored.

v1.8.7

Bug fixes

• Workaround for JDK-8173361
• Backported fix for "Accept timed out" exception

Loader for 2.9 (v4): Java Heap leak profiler

ap-loader v4

• AsyncProfiler.isSupported() now returns false if the OS is not supported by any async-profiler binary, fixes #5

The following is copied from the wrapped async-profiler release by Andrei Pangin. The source code linked below should be ignored.

v2.9

Features

• Java Heap leak profiler
• meminfo command to print profiler's memory usage
• Profiler API with embedded agent as a Maven artifact

Improvements

• --include/--exclude options in the FlameGraph converter
• --simple and --dot options in jfr2flame converter
• An option for agressive recovery of [unknown_Java] stack traces
• Do not truncate signatures in collapsed format
• Display inlined frames under a runtime stub

Bug fixes

• Profiler did not work with Homebrew JDK
• Fixed allocation profiling on Zing
• Various jfrsync fixes
• Symbol parsing fixes
• Attaching to a container on Linux 3.x could fail

Loader for 2.8.3 (v3): Maintenance release

ap-loader v3

• Create specific artifacts for each platform fixing previous issues with maven version updates (issue #4, thanks @ginkel for reporting it)

The following is copied from the wrapped async-profiler release by Andrei Pangin. The source code linked below should be ignored.

v2.8.3

Improvements

• Support virtualized ARM64 macOS
• A switch to generate auxiliary events by async-profiler or FlightRecorder in jfrsync mode

Bug fixes

• Could not recreate perf_events after the first failure
• Handle different versions of Zing properly
• Do not call System.loadLibrary, when libasyncProfiler is preloaded