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Remove unneeded async-profiler functionality (1/n)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,328 +1,2 @@ | ||
| # Changelog | ||
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| ## [2.8.3] - 2022-07-16 | ||
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| ### Improvements | ||
| - Support virtualized ARM64 macOS | ||
| - A switch to generate auxiliary events by async-profiler or FlightRecorder in jfrsync mode | ||
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| ### 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 | ||
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| ## [2.8.2] - 2022-07-13 | ||
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| ### Bug fixes | ||
| - The same .so works with glibc and musl | ||
| - dlopen hook did not work on Arch Linux | ||
| - Fixed JDK 7 crash | ||
| - Fixed CPU profiling on Zing | ||
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| ### Changes | ||
| - Mark interpreted frames with `_[0]` in collapsed output | ||
| - Double click selects a method name on a flame graph | ||
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| ## [2.8.1] - 2022-06-10 | ||
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| ### Improvements | ||
| - JFR to pprof converter (contributed by @NeQuissimus) | ||
| - JFR converter improvements: time range, collapsed output, pattern highlighting | ||
| - `%n` pattern in file names; limit number of output files | ||
| - `--lib` to customize profiler library path in a container | ||
| - `profiler.sh list` command now works without PID | ||
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| ### Bug fixes | ||
| - Fixed crashes related to continuous profiling | ||
| - Fixed Alpine/musl compatibility issues | ||
| - Fixed incomplete collapsed output due to weird locale settings | ||
| - Workaround for JDK-8185348 | ||
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| ## [2.8] - 2022-05-09 | ||
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| ### Features | ||
| - Mark top methods as interpreted, compiled (C1/C2), or inlined | ||
| - JVM TI based allocation profiling for JDK 11+ | ||
| - Embedded HTTP management server | ||
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| ### Improvements | ||
| - Re-implemented stack recovery for better reliability | ||
| - Add `loglevel` argument | ||
| - Do not mmap perf page in `--all-user` mode | ||
| - Distinguish runnable/sleeping threads in OpenJ9 wall-clock profiler | ||
| - `--cpu` converter option to extract CPU profile from the wall-clock output | ||
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| ## [2.7] - 2022-02-14 | ||
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| ### Features | ||
| - Experimental support for OpenJ9 VM | ||
| - DWARF stack unwinding | ||
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| ### Improvements | ||
| - Better handling of VM threads (fixed missing JIT threads) | ||
| - More reliable recovery from `not_walkable` AGCT failures | ||
| - Do not accept unknown agent arguments | ||
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| ## [2.6] - 2022-01-09 | ||
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| ### Features | ||
| - Continuous profiling; `loop` and `timeout` options | ||
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| ### Improvements | ||
| - Reliability improvements: avoid certain crashes and deadlocks | ||
| - Smaller and faster agent library | ||
| - Minor `jfr` and `jfrsync` enhancements (see the commit log) | ||
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| ## [2.5.1] - 2021-12-05 | ||
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| ### Bug fixes | ||
| - Prevent early unloading of libasyncProfiler.so | ||
| - Read kernel symbols only for perf_events | ||
| - Escape backslashes in flame graphs | ||
| - Avoid duplicate categories in `jfrsync` mode | ||
| - Fixed stack overflow in RedefineClasses | ||
| - Fixed deadlock when flushing JFR | ||
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| ### Improvements | ||
| - Support OpenJDK C++ Interpreter (aka Zero) | ||
| - Allow reading incomplete JFR recordings | ||
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| ## [2.5] - 2021-10-01 | ||
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| ### Features | ||
| - macOS/ARM64 (aka Apple M1) port | ||
| - PPC64LE port (contributed by @ghaug) | ||
| - Profile low-privileged processes with perf_events (contributed by @Jongy) | ||
| - Raw PMU events; kprobes & uprobes | ||
| - Dump results in the middle of profiling session | ||
| - Chunked JFR; support JFR files larger than 2 GB | ||
| - Integrate async-profiler events with JDK Flight Recordings | ||
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| ### Improvements | ||
| - Use RDTSC for JFR timestamps when possible | ||
| - Show line numbers and bci in Flame Graphs | ||
| - jfr2flame can produce Allocation and Lock flame graphs | ||
| - Flame Graph title depends on the event and `--total` | ||
| - Include profiler logs and native library list in JFR output | ||
| - Lock profiling no longer requires JVM symbols | ||
| - Better container support | ||
| - Native function profiler can count the specified argument | ||
| - An option to group threads by scheduling policy | ||
| - An option to prepend library name to native symbols | ||
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| ### Notes | ||
| - macOS build is provided as a fat binary that works both on x86-64 and ARM64 | ||
| - 32-bit binaries are no longer shipped. It is still possible to build them from sources | ||
| - Dropped JDK 6 support (may still work though) | ||
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| ## [2.0] - 2021-03-14 | ||
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| ### Features | ||
| - Profile multiple events together (cpu + alloc + lock) | ||
| - HTML 5 Flame Graphs: faster rendering, smaller size | ||
| - JFR v2 output format, compatible with FlightRecorder API | ||
| - JFR to Flame Graph converter | ||
| - Automatically turn profiling on/off at `--begin`/`--end` functions | ||
| - Time-to-safepoint profiling: `--ttsp` | ||
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| ### Improvements | ||
| - Unlimited frame buffer. Removed `-b` option and 64K stack traces limit | ||
| - Additional JFR events: OS, CPU, and JVM information; CPU load | ||
| - Record bytecode indices / line numbers | ||
| - Native stack traces for Java events | ||
| - Improved CLI experience | ||
| - Better error handling; an option to log warnings/errors to a dedicated stream | ||
| - Reduced the amount of unknown stack traces | ||
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| ### Changes | ||
| - Removed non-ASL code. No more CDDL license | ||
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| ## [1.8.4] - 2021-02-24 | ||
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| ### Improvements | ||
| - Smaller and faster agent library | ||
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| ### Bug fixes | ||
| - Fixed JDK 7 crash during wall-clock profiling | ||
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| ## [1.8.3] - 2021-01-06 | ||
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| ### Improvements | ||
| - libasyncProfiler.dylib symlink on macOS | ||
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| ### Bug fixes | ||
| - Fixed possible deadlock on non-HotSpot JVMs | ||
| - Gracefully stop profiler when terminating JVM | ||
| - Fixed GetStackTrace problem after RedefineClasses | ||
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| ## [1.8.2] - 2020-11-02 | ||
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| ### Improvements | ||
| - AArch64 build is now provided out of the box | ||
| - Compatibility with JDK 15 and JDK 16 | ||
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| ### Bug fixes | ||
| - More careful native stack walking in wall-clock mode | ||
| - `resume` command is not compatible with JFR format | ||
| - Wrong allocation sizes on JDK 8u262 | ||
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| ## [1.8.1] - 2020-09-05 | ||
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| ### Improvements | ||
| - Possibility to specify application name instead of `pid` (contributed by @yuzawa-san) | ||
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| ### Bug fixes | ||
| - Fixed long attach time and slow class loading on JDK 8 | ||
| - `UnsatisfiedLinkError` during Java method profiling | ||
| - Avoid reading `/proc/kallsyms` when `--all-user` is specified | ||
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| ## [1.8] - 2020-08-10 | ||
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| ### Features | ||
| - Converters between different output formats: | ||
| - JFR -> nflx (FlameScope) | ||
| - Collapsed stacks -> HTML 5 Flame Graph | ||
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| ### Improvements | ||
| - `profiler.sh` no longer requires bash (contributed by @cfstras) | ||
| - Fixed long attach time and slow class loading on JDK 8 | ||
| - Fixed deadlocks in wall-clock profiling mode | ||
| - Per-thread reverse Flame Graph and Call Tree | ||
| - ARM build now works with ARM and THUMB flavors of JDK | ||
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| ### Changes | ||
| - Release package is extracted into a separate folder | ||
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| ## [1.7.1] - 2020-05-14 | ||
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| ### Features | ||
| - LBR call stack support (available since Haswell) | ||
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| ### Improvements | ||
| - `--filter` to profile only specified thread IDs in wall-clock mode | ||
| - `--safe-mode` to disable selected stack recovery techniques | ||
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| ## [1.7] - 2020-03-17 | ||
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| ### Features | ||
| - Profile invocations of arbitrary Java methods | ||
| - Filter stack traces by the given name pattern | ||
| - Java API to filter monitored threads | ||
| - `--cstack`/`--no-cstack` option | ||
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| ### Improvements | ||
| - Thread names and Java thread IDs in JFR output | ||
| - Wall clock profiler distinguishes RUNNABLE vs. SLEEPING threads | ||
| - Stable profiling interval in wall clock mode | ||
| - C++ function names as events, e.g. `-e VMThread::execute` | ||
| - `check` command to test event availability | ||
| - Allow shading of AsyncProfiler API | ||
| - Enable CPU profiling on WSL | ||
| - Enable allocation profiling on Zing | ||
| - Reduce the amount of `unknown_Java` samples | ||
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| ## [1.6] - 2019-09-09 | ||
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| ### Features | ||
| - Pause/resume profiling | ||
| - Allocation profiling support for JDK 12, 13 (contributed by @rraptorr) | ||
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| ### Improvements | ||
| - Include all AsyncGetCallTrace failures in the profile | ||
| - Parse symbols of JNI libraries loaded in runtime | ||
| - The agent autodetects output format by the file extension | ||
| - Output file name patterns: `%p` and `%t` | ||
| - `-g` option to print method signatures | ||
| - `-j` can increase the maximum Java stack depth | ||
| - Allocaton sampling rate can be adjusted with `-i` | ||
| - Improved reliability on macOS | ||
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| ### Changes | ||
| - `-f` file names are now relative to the current shell directory | ||
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| ## [1.5] - 2019-01-08 | ||
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| ### Features | ||
| - Wall-clock profiler: `-e wall` | ||
| - `-e itimer` mode for systems that do not support perf_events | ||
| - Native stack traces on macOS | ||
| - Support for Zing runtime, except allocation profiling | ||
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| ### Improvements | ||
| - `--all-user` option to allow profiling with restricted | ||
| `perf_event_paranoid` (contributed by @jpbempel) | ||
| - `-a` option to annotate method names | ||
| - Improved attach to containerized and chroot'ed JVMs | ||
| - Native function profiling now accepts non-public symbols | ||
| - Better mapping of Java thread names (contributed by @KirillTim) | ||
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| ### Changes | ||
| - Changed default profiling engine on macOS | ||
| - Fixed the order of stack frames in JFR format | ||
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| ## [1.4] - 2018-06-24 | ||
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| ### Features | ||
| - Interactive Call tree and Backtrace tree in HTML format (contributed by @rpulle) | ||
| - Experimental support for Java Flight Recorder (JFR) compatible output | ||
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| ### Improvements | ||
| - Added units: `ms`, `us`, `s` and multipliers: `K`, `M`, `G` for interval argument | ||
| - API and command-line option `-v` for profiler version | ||
| - Allow profiling containerized JVMs on older kernels | ||
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| ### Changes | ||
| - Default CPU sampling interval reduced to 10 ms | ||
| - Changed the text format of flat profile | ||
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| ## [1.3] - 2018-05-13 | ||
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| ### Features | ||
| - Profiling of native functions, e.g. malloc | ||
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| ### Improvements | ||
| - JDK 9, 10, 11 support for heap profiling with accurate stack traces | ||
| - `root` can now profile Java processes of any user | ||
| - `-j` option for limiting Java stack depth | ||
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| ## [1.2] - 2018-03-05 | ||
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| ### Features | ||
| - Produce SVG files out of the box; flamegraph.pl is no longer needed | ||
| - Profile ReentrantLock contention | ||
| - Java API | ||
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| ### Improvements | ||
| - Allocation and Lock profiler now works on JDK 7, too | ||
| - Faster dumping of results | ||
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| ### Changes | ||
| - `total` counter of allocation profiler now measures heap pressure (like JMC) | ||
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| ## [1.1] - 2017-12-03 | ||
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| ### Features | ||
| - Linux Perf Events profiling: CPU cycles, cache misses, branch misses, page faults, context switches etc. | ||
| - Kernel tracepoints support | ||
| - Contended monitor (aka intrinsic lock) profiling | ||
| - Individual thread profiles | ||
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| ### Improvements | ||
| - Profiler can engage at JVM start and automatically dump results on exit | ||
| - `list` command-line option to list supported events | ||
| - Automatically find target process ID with `jps` tool | ||
| - An option to include counter value in `collapsed` output | ||
| - Friendly class names in allocation profile | ||
| - Split allocations in new TLAB vs. outside TLAB | ||
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| ### Changes | ||
| - Replaced `-m` modes with `-e` events | ||
| - Interval changed from `int` to `long` | ||
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| ## [1.0] - 2017-10-09 | ||
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| ### Features | ||
| - CPU profiler without Safepoint bias | ||
| - Lightweight Allocation profiler | ||
| - Java, native and kernel stack traces | ||
| - FlameGraph compatible output | ||
| !TODO! |
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