Fully featured low overhead profiler for Java EE and Java SE platforms.
Performance monitoring and profiling of Jenkins, TeamCity, 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 Remote profiling from user interface
- 2.2.2 Console Java EE server integration wizard
- 2.2.3 Console 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 Troubleshoot connection problems
- 5 Solving performance problems
- 5.1 Performance bottlenecks
- 5.2 Optimizing memory usage
- 5.3 Memory leaks
- 5.3.1 GC roots
- 5.4 Excessive garbage allocation
- 5.5 Out of memory error (OutOfMemoryError and -XX:+HeapDumpOnOutOfMemoryError)
- 6 CPU profiling
- 6.1 CPU usage estimation
- 6.2 Sampling
- 6.3 Asynchronous sampling
- 6.4 Tracing
- 6.5 Call counting
- 6.6 CPU tab
- 6.6.1 CPU usage telemetry
- 6.6.2 Call tree - All threads merged
- 6.6.3 Call tree - By thread
- 6.6.4 Flame graph
- 6.6.5 Hot spots
- 6.6.6 Method list
- 6.6.7 Java EE profiling results
- 6.6.8 Callees list view
- 6.6.9 Method merged callees view
- 6.6.10 Method back traces view
- 6.7 What-if: an ability to ignore particular methods or focus on particular methods only
- 6.8 Comparing performance snapshots
- 6.9 Sampling settings
- 6.10 Tracing settings
- 7 Threads
- 8 Deadlock detector
- 9 Memory profiling
- 9.1 Memory telemetry
- 9.2 Memory snapshot
- 9.3 Object allocation recording
- 9.4 Shallow and retained sizes
- 9.5 Memory views
- 9.5.1 Objects view
- 9.5.1.1 Class list
- 9.5.1.2 Class and package
- 9.5.1.3 Class loaders
- 9.5.1.4 Web applications
- 9.5.1.5 Object generations
- 9.5.1.6 Reachability scopes
- 9.5.1.7 Shallow size
- 9.5.1.8 Object explorer
- 9.5.1.9 Biggest objects (dominators)
- 9.5.1.10 Allocations
- 9.5.1.11 Object ages
- 9.5.1.12 Merged paths
- 9.5.1.13 Class hierarchy
- 9.5.2 Method merged callees view
- 9.5.3 Method back traces view
- 9.5.4 Quick info view
- 9.5.5 GC roots view
- 9.5.6 Leak detection: working with paths
- 9.6 Memory inspections
- 9.7 Comparing memory snapshots
- 9.8 Support of HPROF format snapshots
- 9.9 Values of primitive types
- 9.10 Persistent object IDs
- 9.11 Useful actions
- 9.12 Set description language
- 10 Garbage collection
- 11 Monitor profiling
- 12 Exception profiling
- 13 Probes: monitor events of various kinds
- 13.1 Events in user interface
- 13.1.1 Events by Table
- 13.1.1.1 Profiler events in table 'Messages'
- 13.1.2 Event Timeline
- 13.1.3 Event Call Tree
- 13.1.4 Event stack traces
- 13.1.5 Navigation between views
- 13.1.6 Events in range
- 13.2 Event inspections
- 13.3 Built-in probes
- 13.3.1 com.yourkit.probes.builtin.Threads
- 13.3.2 Class loading probe
- 13.3.3 com.yourkit.probes.builtin.AwtEvents
- 13.3.4 com.yourkit.probes.builtin.Messages
- 13.4 Probe classes
- 13.4.1 Compiling probe classes
- 13.4.2 Probe registration, activity modes
- 13.4.3 Probe unregistration
- 13.5 Monitoring method invocation events
- 13.5.1 Probe class annotation @MethodPattern
- 13.5.2 Callback onEnter()
- 13.5.3 Callback onReturn()
- 13.5.4 Callbacks onUncaughtException() and onUncaughtExceptionExt()
- 13.5.5 Parameter annotation @Param
- 13.5.6 Parameter annotation @Params
- 13.5.7 Parameter annotation @This
- 13.5.8 Parameter annotation @ClassRef
- 13.5.9 Parameter annotation @MethodName
- 13.5.10 Parameter annotation @MethodParameterTypes
- 13.5.11 Parameter annotation @MethodSignature
- 13.5.12 Parameter annotation @OnEnterResult
- 13.5.13 Parameter annotation @ReturnValue
- 13.5.14 Parameter annotation @ThrownException
- 13.5.15 Probe application rules
- 13.6 Data storage
- 13.6.1 Tables, rows, columns
- 13.6.2 Lasting events and point events
- 13.6.3 Table API
- 13.6.4 Scalability
- 14 Performance charts
- 15 Inspections: automatic recognition of typical problems
- 16 Automatically trigger actions on event
- 17 Summary, snapshot annotation, automatic deobfuscation
- 18 IDE integration
- 18.1 Eclipse
- 18.2 Completing Eclipse plugin installation
- 18.2.1 Completing Eclipse 3.5-4.x plugin installation
- 18.2.2 Completing MyEclipse 2014 or newer plugin installation
- 18.2.3 Completing MyEclipse 8.5-2013 plugin installation
- 18.3 IntelliJ IDEA
- 18.4 NetBeans
- 18.5 JDeveloper
- 19 Time measurement (CPU time, wall time)
- 20 Filters
- 21 Snapshot directory customization
- 22 Export of profiling results to HTML, CSV, XML, plain text
- 23 Profiler API
- 24 Command line tool to control profiling
- 25 FAQ: How to profile in my scenario?