H. Features Introduced in Ingres 2.6 : Buffer Manager Performance Improvements
 
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Buffer Manager Performance Improvements
A number of improvements have been made to the buffer manager to eliminate or minimize bottlenecks identified when running various performance tests. These include:
Removal of stats for fixed priority pages. In Ingres 2.6, stats are tracked by buffer page type for better analysis of the BM’s LRU algorithm.
Raising a buffer’s priority each time it is fixed; previously it was raised only when newly fixed.