Changelog

[1.5 Early Access]

Features

Native stack traces on macOS

[1.4] - 2018-06-24

Features

Interactive Call tree and Backtrace tree in HTML format (contributed by @rpulle)
Experimental support for Java Flight Recorder (JFR) compatible output

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

Changes

Default CPU sampling interval reduced to 10 ms
Changed the text format of flat profile

[1.3] - 2018-05-13

Features

Profiling of native functions, e.g. malloc

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

[1.2] - 2018-03-05

Features

Produce SVG files out of the box; flamegraph.pl is no longer needed
Profile ReentrantLock contention
Java API

Improvements

Allocation and Lock profiler now works on JDK 7, too
Faster dumping of results

Changes

total counter of allocation profiler now measures heap pressure (like JMC)

[1.1] - 2017-12-03

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

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

Changes

Replaced -m modes with -e events
Interval changed from int to long

[1.0] - 2017-10-09

Features

CPU profiler without Safepoint bias
Lightweight Allocation profiler
Java, native and kernel stack traces
FlameGraph compatible output