[#CORE-3633] Check and correct memory usage issues in FB3

Firebird Core

CORE-3560

Check and correct memory usage issues in FB3

Created: 13/Oct/11 12:02 PM Updated: 16/Nov/15 01:32 PM

Component/s:

Engine

Affects Version/s:

3.0 Initial

Fix Version/s:

3.0 RC1

Issue Links:

Relate

This issue is related to:

~~CORE-4857~~ Excessive memory consumption w/SuperServer when large number of connections opened

~~CORE-4858~~ Memory is not released if output of abend messages is interrupted by Ctrl-C (when trying to establish multiple attachments using Jaybird)

Description

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FB3 is using much more OS memory for same tasks compared with FB2.X.

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Alexander Peshkov added a comment - 16/Nov/15 01:32 PM

This issue was resolved (at least as much as possible) in RC1. Memory manager was learned to allocate medium amounts of memory from parent pool - particularly memory extents for allocation of small blocks and small amount of medium size blocks, thus avoiding need in allocation of relatively big amounts of memory from OS that often remain unused. From memory manager POV this problem is resolved.