Java Profiler

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

.NET Profiler

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

Connection Broker

Secure and easy profiling in cloud, containers and clustered environments.

YouMonitor

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

YourKit Java Profiler help

8.1 IDE integration

8.1.1 Eclipse
8.1.2 IntelliJ IDEA
8.1.3 MyEclipse
8.1.4 NetBeans

8.2 Java server integration wizard
8.3 Attach profiler to a running application
8.4 Remote profiling

8.5 Profiling in Docker container

9 Profiling overhead
10 Snapshots

10.1 Snapshot directory
10.2 Snapshot annotation
10.3 Performance snapshot
10.4 Comparing performance snapshots
10.5 Memory snapshot
10.6 Comparing memory snapshots
10.7 HPROF (Heap Profiler) snapshots
10.8 IBM PHD (Portable Heap Dumps) snapshots
10.9 JFR (Java Flight Recorder) snapshots

11 Solving performance problems

11.1 Performance bottlenecks
11.2 Optimizing memory usage
11.3 Memory leaks
11.4 Excessive garbage allocation
11.5 Out of memory error (OutOfMemoryError and -XX:+HeapDumpOnOutOfMemoryError)
11.6 Solving 'java.lang.OutOfMemoryError: PermGen space' error

12 CPU profiling

12.1 CPU and wall times when profiling Java applications
12.2 CPU profiling modes
12.3 CPU usage estimation
12.4 CPU sampling
12.5 Asynchronous CPU sampling
12.6 CPU sampling settings
12.7 CPU tracing
12.8 CPU tracing settings
12.9 Call counting
12.10 CPU tab

12.11 What-if: an ability to ignore particular methods or focus on particular methods only

16.6.6.1 Class
16.6.6.2 Class and package
16.6.6.3 Class loader
16.6.6.4 Web application
16.6.6.5 Generation
16.6.6.6 Reachability
16.6.6.7 Shallow size

16.6.7 Allocations

16.6.8 Method merged callees view
16.6.9 Method back traces view
16.6.10 Quick info view
16.6.11 Leak detection: working with paths
16.6.12 Merged paths
16.6.13 Class hierarchy

17 Garbage collection
18 Monitor profiling
19 Exception profiling
20 Telemetry
21 Probes: monitor events of various kinds

21.1 Events in user interface

21.1.1 Event Table

21.1.1.1 Profiler events in table 'Messages'

21.2 Event inspections
21.3 Built-in probes

21.3.1 com.yourkit.probes.builtin.Threads
21.3.2 Class loading probe
21.3.3 com.yourkit.probes.builtin.AwtEvents

21.4 Probe classes

21.4.1 Compiling probe classes
21.4.2 Probe registration, activity modes
21.4.3 Probe unregistration

21.5 Monitoring method invocation events

21.5.1 Probe class annotation @MethodPattern
21.5.2 Callback onEnter()
21.5.3 Callback onReturn()
21.5.4 Callback onExit()
21.5.5 Callbacks onUncaughtException() and onUncaughtExceptionExt()
21.5.6 Parameter annotation @Param
21.5.7 Parameter annotation @Params
21.5.8 Parameter annotation @This
21.5.9 Parameter annotation @ClassRef
21.5.10 Parameter annotation @MethodName
21.5.11 Parameter annotation @MethodTimeMs
21.5.12 Parameter annotation @MethodTimeNs
21.5.13 Parameter annotation @MethodParameterTypes
21.5.14 Parameter annotation @MethodSignature
21.5.15 Parameter annotation @OnEnterResult
21.5.16 Parameter annotation @ReturnValue
21.5.17 Parameter annotation @ThrownException
21.5.18 Probe application rules

21.6 Data storage

22 Inspections: automatic recognition of typical problems
23 Automatically trigger actions on event

24 Automatic deobfuscation
25 Summary
26 Filters
27 Profiler command line
28 Export of profiling results to external formats
29 Profiler Java API
30 Profiler HTTP API
31 Settings

31.1 Proxy

32 Troubleshooting and FAQ

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