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Status Delivered
Workspace IBM Rational Business Developer
Categories EGL Language
Created by Guest
Created on Dec 24, 2010

RELATED IDEAS

JVM Buffering

The ability to enable JVM buffering for IO. This means that instead of
using a java FileOutputStreamObject to write results to disk, we would like
to use some other mechanism, such as a BufferedOutputStream or other java
based buffering to write data to file. For reading analoguous changes can
be made. Tests revealed that this has a very beneficial effect for
throughput. We would like to use this from a generation option.

Idea priority High
  • Guest
    Reply
    |     Sep 14, 2015

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - Programming Languages
    Product - Business Developer

    For recording keeping, the previous attributes were:
    Brand - Rational
    Product family - Design & development
    Product - Business Developer

  • Guest
    Reply
    |     Jan 27, 2012

    This enhancement is now available in fix pack 8.0.1.3.

  • Guest
    Reply
    |     Sep 8, 2011

    Good news! Further investigation has indicated that there are some improvements that we can make in this area. This is in plan for the next V8 fix pack.

  • Guest
    Reply
    |     Jan 17, 2011

    The EGL developers have investigated your ideas, and have determined that the measurements that you did for Java programs do not apply to generated EGL programs.

    EGL does not use a BufferedOutputStream or BufferedInputStream for file I/O, but it does use a buffer. The buffer is a byte array where the record's data is stored. Reads and writes operate directly on this buffer. This gives even better performance than using the buffered stream classes. Using those classes can result in an extra copy, where data is moved to/from EGL's buffer into the buffer kept by the buffered stream object.

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