Contact Us | Site Map
Firebird is used by approximately 1 million of software developers worldwide. High compatibility with industry standards on many fronts makes Firebird the obvious choice for developing interoperable applications for homogeneous and hybrid environments.
Join Firebird!
Join Firebird Foundation to support Firebird SQL development and receive multiple bonuses
Follow Us
Select your media preference
Google+ Twitter Facebook RSS
Newsletter
Subscribe to Firebird’s Newsletter to receive the latest news
Developer's Report: Firebird Core Development & Coordination
July 2012 to January 2013

During the past months, my activities were concentrated in the following areas (ordered by priority):

  1. Stability fixes for the v2.5 series. It's about highly loaded databases that were causing troubles with (regular) lock-ups and (rare) crashes, as well as about other known issues.
    • Resolved tickets: CORE-3979, CORE-3989, CORE-4004, CORE-4010.

    • Work in progress: CORE-3809, CORE-3817.

    • It required some refactoring in the asynchronous shutdown/cancellation code and the looper logic.

    • Also, this includes a few minor performance improvements not registered in the tracker. Mostly, it's about various code optimizations that, being combined together, allowed up to 15% smaller fetch time in some conditions.

  2. Regular bugfixing and backporting, including regression fixes for v3.0.
    See: CORE-1245, CORE-1295, CORE-3675, CORE-3853, CORE-3924, CORE-3967, CORE-3977, CORE-3978, CORE-3981, CORE-3986, CORE-3994, CORE-4038.

  3. Architectural work for v3.0. This includes the tasks targeted at finalizing ODS and API, thus allowing Alpha 1 to be released.

    • Discussed with Alex and Vlad changes to the new API related to the explicit DSQL cursor interfaces, also targeted to support bi-directional (aka scrollable) cursors. The underlying implementation is already in place.

    • Removed the remaining 64KB limits (SQL text, BLR, data messages, procedure/function argument formats) inside the engine.

  4. Pending changes that affect Alpha:

    • Remove the 64KB limits from the remote protocol subsystem.

    • Fix CORE-3943.

      At my side, there are no other showstoppers.
  5. Other development for v3.0.

    • Added the initialization timestamp to the shared memory regions and reported that in the fb_lock_print output.

    • Cleaned up the dead code (native quad integer support).

    • Extended the monitoring tables, see: CORE-2780, CORE-2187, CORE-3779.

    • Various minor optimizer improvements. In progress.

    • Page-level TRUNCATE TABLE statement. In progress.

    • Optimization of page-level record retrieval that allows to save page locks/latches when a bunch of records is read from the same (i.e. already cached) page. In progress.

Dmitry Yemanov
Penza, Russia
Home About Firebird Documentation Downloads Community Support Development Case Studies Back to Top
This site and the pages contained within are Copyright © 2000-2014, Firebird Project. Firebird® is a registered trademark of Firebird Foundation Incorporated. Developed by DQ Team.