[teiid-issues] [JBoss JIRA] (TEIID-5534) Smaller initial memory buffer allocations

[Steven Hawkins (Jira)]

Steven Hawkins created TEIID-5534:
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             Summary: Smaller initial memory buffer allocations
                 Key: TEIID-5534
                 URL: https://issues.jboss.org/browse/TEIID-5534
             Project: Teiid
          Issue Type: Quality Risk
          Components: Query Engine
            Reporter: Steven Hawkins
            Assignee: Steven Hawkins
             Fix For: 12.0


For smaller vms, under 16 GB, the default allocation scheme for on-heap fixed memory buffers is in 1 GB increments.

This can be quite large for VMs under 8 GBs - especially if the full commit of that memory is not needed.

The allocation scheme should introduce the buffers more incrementally and release them when compaction is run if they aren't needed.



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