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From: YourKit Information Service <[email protected]> Subject: YourKit Java Profiler 12 released Date: December 14, 2012 11:50:49 AM GMT+01:00 To: [email protected]

Greetings,

We are glad to announce immediate availability of YourKit Java Profiler 12 released on December 3, 2012.

It can be downloaded at http://www.yourkit.com/download/

MOST NOTABLE CHANGES AND NEW FEATURES: ======================================

NEW PLATFORMS SUPPORTED:

- Linux on ARM

- Linux on PPC

CPU PROFILING:

- Tracing overhead significantly reduced: profiled applications run up to 10%-50% faster than with the previous profiler version, due to new adaptive tracing mode and optimizations

- Tracing accuracy increased

- Reworked tracing and sampling settings

MEMORY PROFILING:

- New feature: "Class tree" view which is similar to "Class list", but shows classes grouped by package

- New feature: memory views such as Class list allow selection of multiple rows

- "Duplicate strings" inspection: the results are shown under a new grouping root node which presents the total waste in all the duplicate strings

- Optimization: snapshots with big primitive arrays are opened faster

- Optimization: performance of "Incoming References" view has been dramatically improved

- Improved calculation of exact retained size in "Class list" and similar views: more items are processed per click if calculation speed allows

- Improvement: available CPU cores are used for parallel computations in: - Class list - Class tree - Generations - Reachability scopes - Class loaders - Web applications - Object ages

- Improvement: "Calculate exact retained sizes" action uses available CPU cores to perform calculation in parallel

- Optimization: allocation recording overhead has been reduced for multithreaded applications: code being profiled runs up to 30% faster when each 10th object is recorded (the default setting), and up to 70% faster when each 100th object is recorded, comparing with the previous version

- Improvement: web application context path (URL) is now shown in addition to the name

- Web applications: added support of Jetty (versions 6, 7, 8)

- Class instance count telemetry: scalability improved

TELEMETRY:

- CPU usage telemetry: kernel CPU time is shown as a separate curve, in addition to the main user + kernel CPU time graph

- Graph rendering has been optimized, making UI much more responsive, especially when using bigger scales

PROBES:

- New feature: ability to clear tables. Get rid of older events you are not interested in anymore, or give space for new events if the table capacity limit has been reached.

- "Probes" tab layout has been changed to gives more vertical space for browsing event lists, and make the UI more consistent

- Class loading probe can be optionally disabled

IDE INTEGRATION:

- Eclipse, IntelliJ IDEA, NetBeans 7.0 and newer plugin automatically detects 32-bit and 64-bit JVMs, instead of relying on user input

- Eclipse: Maven run configurations supported in Eclipse 3.7 and newer

- IntelliJ IDEA 12 supported

- NetBeans 7.3 supported

J2EE INTEGRATION:

- J2EE integration wizard: added Jetty 6 and newer support

USER INTERFACE:

- Improvement: the left vertical tab group avoids scroller if many tabs are opened

- Added an quick way to switch between applying and not applying filters in UI

- Added support of high-contrast color schemes

- Call tree and back traces views: added popup menu item to expand selected node down to 5 levels, as a supplement to the existing item which expands the node fully

MISCELLANEOUS:

- Export with command line: class list is exported for performance snapshots too (as seen in Memory tab | Class list)

- Agent: log file name now contains the session name to better separate logs from different applications

- Agent: added an option to store logs from several runs of the same application in a series of log files named <session name>.<running number>.log This mode can be useful when profiling applications such as servers, when having a united log is better than having a separate log for each server start.

- Agent: Groovy 2.0 supported

- Other bug fixes and improvements

See complete list of changes at http://www.yourkit.com/changes/

Kindest regards, YourKit Team

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