Click on thumbnail to view full-size image. Optimizeit Profiler object allocation backtrace view.
Jprofiler guimode offline mode code#
Not only does Profiler tell you in which methods the allocations occurred (Figure 3), but if you double-click any method name, a source code viewer pops up with the allocating statement line highlighted. If you've never used a heap profiler before, be prepared for an epiphany: Not only will the underlying reality of your program viewed through this lens completely disorient you, but once you come to terms with it, you'll never view your program's source code the same way again.īorland's Profiler lets you click on any class and view precisely where each instance of that class has been allocated. Click on thumbnail to view full-size image.įigure 2's class instances view tabulates the distribution of live objects, grouped by class and sorted by number of objects. Optimizeit Profiler's class instances view: Easy on the eyes, but an eye opener nevertheless. Borland Optimizeit Suite's core featuresīorland's Optimizeit Profiler is the combined tool façade for CPU and heap/object profiling. The suite consists of three loosely coupled components: Optimizeit Profiler, Optimizeit Thread Debugger, and Optimizeit Code Coverage. At ,599 a seat, Borland is clearly not trying to grab the lone developer market. Borland Optimizeit Suiteīorland's Optimizeit Suite is the most mature, full-featured profiler package reviewed here. I definitely found it necessary to familiarize myself with each profiler by playing with these demos before letting the tools loose on my own programs. You must have intimate knowledge of an application's architecture and implementation to expect to gain new insights from using a profiler, so I relied mainly on two of my own real-life applications as profiling guinea pigs (see Table 2 below).Īll three profilers come with small demonstration applications. I didn't test Java 2 Platform, Enterprise Edition (J2EE) applications, although all three vendors try their best to sell into J2EE markets by including product features that explicitly support servlet profiling or EJB components running on various application servers. To keep this review manageable, I restricted myself to testing standalone Java 2 Platform, Standard Edition (J2SE) applications.
Jprofiler guimode offline mode Pc#
(Windows 98 apparently only offers 50-ms tick accuracy via its public API, and sure enough, many methods will fall through such a coarse timer's net.) So, I tested all three contenders on a standalone PC built around a 900-MHz Athlon CPU, 256 MB RAM, running Windows XP (Service Pack 1). This is, I was told, because Windows 98 isn't a "serious" OS when it comes to method timing accuracy. One exception is that neither Borland's nor Quest Software's profiler suites support Windows 98. In fact, most profilers support every commercially relevant host and/or JVM implementation (due to the large number of permutations see the vendors' product Websites for precise details). I was pleasantly surprised by the profilers' broad support for diverse platforms, both from a host operating system (OS) and Java implementation point of view. ³ ej-technologies' lack of explicit tutorials is partly compensated by some demo sessions Test platform ² ej-technologies' JProfiler Online Help contains almost no screenshots of views or dialogs
¹ JProbe Suite price includes one year of Gold Support (technical support) ** Automated profiling: The ability to perform unattended overnight profiling sessions in other words, command-line-driven operation with no GUI
* Remote profiling: The ability to profile a Java program executing on a machine other than your development machine
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