Some competing vendors will try to convince you with carefully selected benchmarks intended to prove the superiority of their solution. Don't be fooled. The only reliable way to determine performance in the real world, is to try for yourself. Real world applications are far more complex in their content and in their interaction with their external environment than can ever be captured in a simple execution benchmark.

The PERC virtual machine provides support for a subset of the Java? Debug Wire Protocol (JDWP). Developers have used a variety of different Integrated Development Environments to develop programs for the PERC virtual machine, including Forte, JBuilder, and Eclipse.

No. CLDC specifies the core libraries and virtual machine features for J2ME implementations on resource-constrained devices. A CLDC implementation includes a virtual machine. For instance, KVM is included in the CLDC reference implementation.

K virtual machine (KVM) is a Java virtual machine that provides the basis for the CLDC reference implementation (RI). K stands for "Kilobyte" virtual machine, referring to the small footprint of the platform. The K virtual machine is very small -- starting from approximately 70K in size.

Perchloroethylene, or perc, is the dominant chemical solvent used in drycleaning. It is is a clear, colorless liquid that has a sharp, sweet odor and evaporates quickly. It is an effective cleaning solvent and is used by most professional drycleaners because it removes stains and dirt from all common types of fabrics. Perc usually does not cause clothes to shrink, nor dyes to bleed. Perc is not flammable, unlike solvents commonly used to clean clothes in the 1930's and '40's.

No. A virtual machine requires a set of core libraries to run applications. Some of these libraries are packaged as a part of a CLDC implementation along with the virtual machine. In addition, the capabilities of CLDC can be extended by adding profiles such as the Mobile Information Device Profile (MIDP) and/or optional packages.

quot;Virtual machine" is the term applied to the server environments running on a piece of hardware. So, in the example above, the decoupled Linux and Windows servers running on a single blade server would be referred to as virtual machines.

Jikes RVM (Research Virtual Machine) is designed to execute Java??? programs that are typically used in research on fundamental virtual machine design issues. It provides the research communities with a flexible testbed to prototype new virtual machine technologies and experiment with different design alternatives. It runs on the Linux?/IA-32, AIX???/PowerPC???, OSX/PowerPC, and Linux/PowerPC platforms, and exhibits industry-strength performance for many benchmark programs on these platforms.

The WabaVM has been tested extensively for robustness. In its first release, making it robust was the top priority. If you experience any problems, please email support with the full description of the problem.

The KVM is a specification for a Java Virtual Machine optimized for devices with limited resources such as cellphones, handhelds, or set-top boxes. For more details, see the white paper from Sun.

MS say in the performance paper (see II.20.1) that STS performs better when the sites are spread over Virtual Servers rather than SubWebs.

Use the latest, greatest, fastest JVM you can get your hands on for your platform. The compiler's performance is dependent on the performance of the JVM it is running on, so the faster a JVM you can find to run it on, the shorter your compile times will be. At a minimum you need to use a Java 2 or later JVM to run the compiler (J2SE 1.3 for AspectJ 1.1). We realize that this constraint can be a problem for users who don't currently have a Java 2 JVM available.

You might want to remove the Microsoft JVM, which Microsoft no longer supports, in favor of the more recent Sun Microsystems JVM. To remove the Microsoft JVM, perform the following steps: The HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\AdvancedOptions\JAVA_VM registry subkey (to remove the Microsoft Internet Explorer (IE) options When Internet Explorer 7 is installed on Windows XP, ctfmon.exe runs in the background without purpose, and when the Run entry for ctfmon.

Usually the default memory configuration of your VM should be sufficient to work with SQL Developer. If you want to increase the available memoy anyway you will have to start the application with additional command line options. If you use a Sun Microsystem Java VM open a shell window, change to the SQL Developer folder and type java -Xmx256m -jar sqldeveloper.jar to start with a maximum heap memory of 256 MB. The default maximum heap size is 64 MB.

The latest version of WordRider requires at least version 1.5 of the Java 2 platform, and therefore will not be compatible with Microsoft's Virtual Machine.

Yes, when using a hardware key for your license, or for the WellSight Log Viewer, which does not require a license. No, when using an electronic license you must install your WellSight product directly on a real computer running a supported version of Windows. This applies to both stand-alone and network installations.

Those VMs are designed for statically typed languages. That's fine, since Java, C#, and lots of other languages are statically typed. Perl isn't. For a variety of reasons, it means that Perl would run more slowly there than on an interpreter geared towards dynamic languages. The .NET VM didn't even exist when we started development, or at least we didn't know about it when we were working on the design. We do now, though it's still not suitable. Sure we will. They're just not our first target.