Fully featured low overhead profiler for Java EE and Java SE platforms.

Easy to use performance and memory .NET profiler for Windows and Linux.

Performance monitoring and profiling of Jenkins, Bamboo, TeamCity, Gradle, Maven, Ant and JUnit.

YourKit Java Profiler Help

1 System requirements
2 Profiler architecture
3 Running the profiler
4 Profiler activation
5 Running applications with the profiler

5.1 Local profiling
5.2 Remote profiling

5.2.1 Remote profiling from user interface
5.2.2 Console Java EE server integration wizard
5.2.3 Console attach wizard

5.3 Startup options
5.4 Attaching profiler agent to a running JVM
5.5 Profiling overhead: how to reduce or avoid
5.6 Enabling profiling manually
5.7 About JVMTI

8.3.1 GC roots

8.4 Excessive garbage allocation
8.5 Out of memory error (OutOfMemoryError and -XX:+HeapDumpOnOutOfMemoryError)

9 CPU profiling

9.7 What-if: an ability to ignore particular methods or focus on particular methods only
9.8 Comparing performance snapshots
9.9 Sampling settings
9.10 Tracing settings

12.5.1 Objects view

12.5.1.1 Class list
12.5.1.2 Class and package
12.5.1.3 Class loaders
12.5.1.4 Web applications
12.5.1.5 Object generations
12.5.1.6 Reachability scopes
12.5.1.7 Shallow size
12.5.1.8 Object explorer
12.5.1.9 Biggest objects (dominators)
12.5.1.10 Allocations
12.5.1.11 Object ages
12.5.1.12 Merged paths
12.5.1.13 Class hierarchy

12.5.2 Method merged callees view
12.5.3 Method back traces view
12.5.4 Quick info view
12.5.5 GC roots view
12.5.6 Leak detection: working with paths

12.6 Memory inspections
12.7 Comparing memory snapshots
12.8 Support of HPROF format snapshots
12.9 Support of Java Flight Recorder (JFR)
12.10 Support of Portable Heap Dumps (.phd)
12.11 Values of primitive types
12.12 Persistent object IDs
12.13 Useful actions
12.14 Set description language

13 Garbage collection
14 Monitor profiling
15 Exception profiling
16 Probes: monitor events of various kinds

16.1 Events in user interface

16.1.1 Event Table

16.1.1.1 Profiler events in table 'Messages'

16.2 Event inspections
16.3 Built-in probes

16.3.1 com.yourkit.probes.builtin.Threads
16.3.2 Class loading probe
16.3.3 com.yourkit.probes.builtin.AwtEvents

16.4 Probe classes

16.4.1 Compiling probe classes
16.4.2 Probe registration, activity modes
16.4.3 Probe unregistration

16.5 Monitoring method invocation events

16.5.1 Probe class annotation @MethodPattern
16.5.2 Callback onEnter()
16.5.3 Callback onReturn()
16.5.4 Callbacks onUncaughtException() and onUncaughtExceptionExt()
16.5.5 Parameter annotation @Param
16.5.6 Parameter annotation @Params
16.5.7 Parameter annotation @This
16.5.8 Parameter annotation @ClassRef
16.5.9 Parameter annotation @MethodName
16.5.10 Parameter annotation @MethodParameterTypes
16.5.11 Parameter annotation @MethodSignature
16.5.12 Parameter annotation @OnEnterResult
16.5.13 Parameter annotation @ReturnValue
16.5.14 Parameter annotation @ThrownException
16.5.15 Probe application rules

16.6 Data storage

17 Performance Charts
18 Inspections: automatic recognition of typical problems
19 Automatically trigger actions on event

20 Summary, snapshot annotation, automatic deobfuscation
21 IDE integration

21.1 Eclipse
21.2 Completing Eclipse plugin installation

22 Time measurement (CPU time, wall time)
23 Filters
24 Snapshot directory customization
25 Export of profiling results to HTML, CSV, XML, plain text
26 Profiler Java API
27 Profiler HTTP API
28 Command line tool to control profiling
29 Settings

29.1 Proxy

30 FAQ: How to profile in my scenario?

30.1 Profiling in Docker container
30.2 Profiling in Amazon EC2 instance

YourKit uses cookies and other tracking technologies to improve your browsing experience on our website, to show you personalized content and targeted ads, to analyze our website traffic, and to understand where our visitors are coming from.

By browsing our website, you consent to our use of cookies and other tracking technologies in accordance with the Privacy Policy.