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

Monitoring and profiling solution for Gradle, Maven, Ant, JUnit and TestNG.

Easy to use performance and memory profiler for .NET framework.

YourKit Java Profiler Help

1 Running the profiler
2 Running applications with the profiler

2.1 Local profiling
2.2 Remote profiling

2.2.1 Console version of Java EE server integration wizard
2.2.2 Remote attach wizard

2.3 Startup options
2.4 Attaching profiler agent to a running JVM
2.5 Profiling overhead: how to reduce or avoid
2.6 Enabling profiling manually
2.7 About JVMTI (advanced topic)

3 Connect to profiled application
4 Solving performance problems

4.3.1 GC roots

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

5 CPU profiling

5.1 CPU usage telemetry
5.2 Start CPU profiling. Sampling, tracing, call counting.
5.3 CPU sampling settings
5.4 CPU tracing settings
5.5 CPU view
5.6 Callees list view
5.7 Method merged callees view
5.8 Method back traces view
5.9 Java EE high-level statistics
5.10 What-if: an ability to ignore particular methods or focus on particular methods only
5.11 Comparing performance snapshots
5.12 CPU usage estimation

8.5.1 Objects view

8.5.1.1 Class list
8.5.1.2 Class and package
8.5.1.3 Class loaders
8.5.1.4 Web applications
8.5.1.5 Object generations
8.5.1.6 Reachability scopes
8.5.1.7 Shallow size
8.5.1.8 Object explorer
8.5.1.9 Biggest objects (dominators)
8.5.1.10 Allocations
8.5.1.11 Object ages
8.5.1.12 Merged paths
8.5.1.13 Class hierarchy

8.5.2 Method merged callees view
8.5.3 Method back traces view
8.5.4 Quick info view
8.5.5 GC roots view
8.5.6 Leak detection: working with paths

9 Garbage collection
10 Monitor profiling
11 Exception telemetry
12 Probes: monitor events of various kinds

12.1 Events in user interface

12.1.1 Events by Table

12.1.1.1 Profiler events in table 'Messages'

12.2 Event inspections
12.3 Built-in probes

12.3.1 com.yourkit.probes.builtin.Threads
12.3.2 Class loading probe
12.3.3 com.yourkit.probes.builtin.AWTEvents
12.3.4 com.yourkit.probes.builtin.Messages

12.4 Probe classes

12.4.1 Compiling probe classes
12.4.2 Probe registration, activity modes
12.4.3 Probe unregistration

12.5 Monitoring method invocation events

12.5.1 Probe class annotation @MethodPattern
12.5.2 Callback onEnter()
12.5.3 Callback onReturn()
12.5.4 Callbacks onUncaughtException() and onUncaughtExceptionExt()
12.5.5 Parameter annotation @Param
12.5.6 Parameter annotation @Params
12.5.7 Parameter annotation @This
12.5.8 Parameter annotation @ClassRef
12.5.9 Parameter annotation @MethodName
12.5.10 Parameter annotation @MethodParameterTypes
12.5.11 Parameter annotation @MethodSignature
12.5.12 Parameter annotation @OnEnterResult
12.5.13 Parameter annotation @ReturnValue
12.5.14 Parameter annotation @ThrownException
12.5.15 Probe application rules

12.6 Data storage

13 Performance charts
14 Inspections: automatic recognition of typical problems
15 Automatically trigger actions on event

16 Summary, snapshot annotation, automatic deobfuscation
17 IDE integration

17.1 Eclipse
17.2 Completing Eclipse plugin installation

17.2.1 Completing Eclipse 3.5-4.x plugin installation
17.2.2 Completing MyEclipse 2014 or newer plugin installation
17.2.3 Completing MyEclipse 8.5-2013 plugin installation

18 Time measurement (CPU time, wall time)
19 Filters
20 Snapshot directory customization
21 Export of profiling results to HTML, CSV, XML, plain text
22 Profiler API
23 Command line tool to control profiling