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Fully featured low overhead profiler for Java EE
and Java SE platforms.
Easy to use performance and memory profiler for .NET framework.
Supports ASP.NET, Silverlight, .NET Windows services and more.
The Industry Leader Among Profiling Tools

CPU and memory profiling has never been easier, and smarter at the same time. YourKit has developed a revolutionary approach to profiling applications at both development and production stages, bringing unparalleled benefits to professional developers.

Ready for your tasks
Profile any kind of CLR application, server, technology and framework; on various Windows and .NET framework versions; locally and remotely; in development, testing and production. For teams and companies of any size.
Comprehensive, Fully featured
All-in-one profiler utilizes all of the advanced CLR profiling features and capabilities.
Easy and User-friendly
Straightforward installation process, with the most reasonable defaults; seamless integration to development process; minimum extra configuration.
Powerful and Intelligent
YourKit goes far beyond a traditional profiler's capabilities by offering high-level results and advanced, unique automated analysis.

Profile anywhere

You can profile any application running on various .NET framework and Windows versions.

  • Any kind of application: standalone, ASP.NET, service, Silverlight
  • Any framework and technology: IIS, web, database and more
  • .NET Framework 4.5, 4.0, 3.5, 3.0, 2.0
  • All Windows versions:
    • Windows 10
    • Windows 8.1, Windows Server 2012 R2
    • Windows 8, Windows Server 2012
    • Windows 7, Windows Server 2008 R2
    • Windows Vista, Windows Server 2008
    • Windows XP, Windows Server 2003
  • 32-bit and 64-bit systems
  • Microsoft Visual Studio compatible
  • Local and remote profiling

Enterprise-ready

  • Profile ASP.NET and IIS
  • Any framework and technology: web, database and more
  • Local and remote: easily profile servers running on developer machine as well as on a remote server, including production
  • Built-in SSH tunneling support simplifies profiling in restricted network conditions
  • Fully controllable profiling overhead
  • Permissive license policy allows unlimited number of profiled applications
  • High-level profiling results to see the big picture and low-level detail to pinpoint issues
  • Deobfuscation support: profiler restores original class, method and field names of applications obfuscated with Dotfuscator if you provide corresponding obfuscation log

Local and remote profiling

Profile a remote application as easily as a local one:

  • Command line tool enables profiling in a console mode
  • Built-in SSH tunneling support simplifies profiling in restricted network conditions

Controllable overhead

  • Full control of imposed profiling overhead by using appropriate startup options and utilizing profiling modes on demand
  • Minor overhead by default: all profiling activities which may cause noticeable overhead are off unless you explicitly turn them on

Affordable, permissive licensing

  • Flexible commercial licensing model: per-seat, floating, enterprise
  • Multi-platform and multi-processor licensing
  • Fair and cost effective: great volume discounts; licensed are profiler client copies, with unlimited profiler agent copies to profile as many applications or servers as you need, in development, testing or production stages - forget the greedy per-CPU licensing
  • Free embedding into production: distribute the profiler agent with your real-world commercial applications free of charge, to ease your product maintenance and improve your customer support.
  • Special offerings to academic and scientific use
  • Open source project developers and maintainers may apply for a free license

Profiling is easy

  • Easiest installation and configuration
  • Easy launching of profiled applications
  • Attach mode allows on-demand profiling of CLR instances started without the profiler agent

Developer friendly environment

  • Open exact source code line from the profiling results in Visual Studio

CPU profiling - investigate performance issues

  • CPU usage graph showing total, kernel and garbage collector times is always available
  • Choose from available profiling modes -- tracing or sampling -- to balance between result accuracy and fullness and profiling overhead
  • Alternatively, estimate CPU usage retrospectively, basing on recorded thread telemetry data
  • CPU tracing's adaptive mode automatically controls profiling overhead, user no longer needs to explicitly choose filters to exclude methods from profiling as other profilers require
  • CPU views present results as call trees, hot spots, method lists, back traces, merged callees and callees lists
  • High-level profiling available: SQL calls, web requests
  • What-if feature: to concentrate on what's most important, you can exclude particular method calls from the profiling results, or focus on particular calls only
  • Compare snapshots to see what's changed

Memory profiling - memory leaks, usage, GC

  • Memory usage graphs show CLR heap memory pools and overall process memory, GC activity and, if recorded, object creation rate per-second
  • Comprehensive heap inspection and analysis
  • Object allocation recording to solve garbage collection and memory allocation issues. Available settings allow to balance between result fullness and profiling overhead. In particular, consider the unique object counting mode with almost zero overhead.
  • The richest UI to analyze memory usage and find memory leaks
  • Paths from roots to analyze memory leaks and object retention, with the ability to immediately see what would happen if particular references were excluded (i.e. to test a proposed memory leak fix effect without re-running the application)
  • Find objects holding most memory with dominator tree and class list
  • Dissect objects by category, on and on:
  • Object explorer to inspect individual objects
  • Garbage collection profiling to estimate garbage collector load, and, if garbage collection takes a significant amount of time, pin-point the problematic code
  • Automatic inspections detect typical problems. Performing this type of analysis by hand would be a very complicated (if at all possible) task.

Threads


Exceptions


High-level results

  • Event recording: in addition to low level profiling results such as method calls, the profiler can record higher level events with their essential properties such as database queries, web requests and I/O calls. Use built-in probes to recognize typical problems or write your own to inspect specifics of your particular application.
  • Performance charts show basic and higher-level telemetry graphs of web, database, I/O activity.

Powerful analysis capabilities

  • Immediately see profiling results as they come, in real time
  • Capture a snapshot for a more sophisticated analysis, to save the results for history records, share them
  • Compare performance or memory snapshots to see what's changed
  • Lightweight basic telemetry graphs are always available. Very useful and unique feature is that the recent telemetry results are remembered inside the profiler agent. This allows you to connect to the profiled application on demand, being able to discover how the application behaved in the past.
  • Automatic inspections detect typical problems. Performing this type of analysis by hand would be a very complicated (if at all possible) task.

Automated profiling

In addition to the rich UI capabilities for interactive profiling, profiling can also be conducted semi- or fully automatically.

  • Startup options to immediately activate desired profiling modes
  • Triggers to perform actions on high CPU usage, high memory usage, timer
  • API to control profiling of this or another application: switch profiling modes and store profiling results
  • Command line tool to perform some profiling tasks without using the UI

Export to external formats

In addition to the rich analysis capabilities of the profiler, the profiled results can be exported to external form to process with 3rd party tools or share with those not having the profiler.

  • export to XML, HTML, CSV, plain text
  • export from UI
  • export automatically via a command line tool
  • in tables and graphs, selected result text can be copied to clipboard

What's new
April 2, 2015
YourKit Java Profiler 2015 released
YourKit Profiler 2015 for .NET released
Awards
JDJ Editors' Choice Award Winner YourKit Java Profiler received the Java Developer's Journal Editors' Choice Award.
Customers