FIX: Improved memory management for columnstore indexes to deliver better query performance in SQL Server 2014

Summary

Microsoft SQL Server 2014 persists columnstore data as large object (LOB) data types. When columnstore data is read, it flows through a buffer pool to the columnstore object pool. The fix in this article changes the life cycle of these LOB pages within the buffer pool to improve memory availability to the columnstore object pool for improved query performance.

The decreased memory availability to the columnstore object pool occurs because of a regression that occurs after you apply update 3029977 .

Resolution

This fix is included in the following cumulative update for SQL Server:

Cumulative Update 1 for SQL Server 2014 SP1

Cumulative Update 7 for SQL Server 2014


About cumulative updates for SQL Server
About cumulative updates for SQL Server

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

Learn about the terminology Microsoft uses to describe software updates.
Properties

Article ID: 3053664 - Last Review: Jun 22, 2015 - Revision: 1

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