Product Documentation

Database Administrator's Guide

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BUFBLK_RATIO <ratio of index cache pages to block list mutexes>

The default ratio is 64. This means a block list mutex for every 64 index cache pages. The BUFBLK_RATIO keyword can override the default. A ratio of one (1) means a mutex for every cache page. A configuration entry of zero is ignored (and the compile-time default is used). The advantage of the ratio specification is that the BUFBLK configuration entry does not have to be changed when the IDX_MEMORY entry is changed.

Note: Contact FairCom for details on this extremely advanced configuration option as this can severely impact online performance.