WebSphere Real Time

Enables Java as a practical language for Real Time Applications

Providing predictable performance

IBM® WebSphere® Real Time is a Java Runtime Environment and development kit that helps you achieve more consistent performance and service quality for Java applications. It overcomes the unpredictability of application execution time due to Garbage Collection (GC) and Just-in-time (JIT) compiler. IBM WebSphere Real Time enables you to develop applications with low latency and highly predictable response times.

WebSphere Real Time features:

  • A real-time, incremental garbage collector with garbage collection pauses configurable to as short as one millisecond.
  • Support for the Java 7.0 programming model and improved 32-bit and 64-bit throughput performance and support for an enhanced Linux kernel using libraries and binaries from Red Hat and Novell.
  • Real-time Specification for Java—IBM provides a conformant Real Time Specification for Java (RTSJ) Class Library 1.0.2.
  • Ahead-of-time compilation enables code pre-compilation for fast and deterministic execution and just-in-time compilation improves performance by compiling sections of code in frequent use.
  • Class sharing support improves dynamic class loading performance and memory footprint in multiple JVM scenarios.

WebSphere Real Time

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Enables Java as a practical language for Real Time Applications

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System requirements

Software prerequisites:

  • Red Hat Enterprise MRG V1

  • SUSE Linux Enterprise Real Time (SLERT) 10

WebSphere Real Time is supported on the following though without the benefit of the RTSJ support.

  • Red Hat Enterprise Linux AS Version 5.0 Update 4

  • Red Hat Enterprise Linux AS Version 6.0

  • SUSE Linux Enterprise Server Version 11

  • IBM AIX V6.1

  • IBM AIX V7.1

Certified hardware:

WebSphere Real Time for Linux is certified on multiprocessor variants of the following systems:

  • IBM BladeCenter® LS20 (Types 8850-76U, 8850-55U, 7971, 7972)

  • IBM eServertm xSeries® 326m (Types 7969-65U, 7969-85U, 7984-52U, 7984-6AU)

  • IBM BladeCenter LS21 (Type 7971-6AU)

  • IBM BladeCenter HS21 XM Dual Quad Core (Type 7995)

WebSphere Real Time for Linux is supported on hardware that runs a supported operating system, and that has these characteristics:

  • A minimum of 512 MB of physical memory.

  • AMD Opteron, Intel® Pentium® processor, or Intel EM64T running at 800 MHz or faster

  • WebSphere Real Time for Linux for 32-bit: minimum Intel Pentium 3, AMD Opteron, or Intel Atom Processor.

  • WebSphere Real Time for Linux for 64-bit: Intel 64, AMD Opteron, or Intel Atom Processor 230 or 330.

WebSphere Real Time for AIX is certified on multiprocessor variants of Common Hardware Reference Platform (chrp) systems. A system is a CHRP system if the command:
            lscfg -p | fgrep Architectures
replies with:
            Model Architecture: chrp

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WebSphere Real Time

 

 

 

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