Informix Monitoring: Buffer Wait Ratio

A metric which attempts to quantify the percentage of requests to write to a buffer which have to wait either for a locked buffer to be released so that it can be overwritten with different a data or index page or for a locked LRU queue to be released so that that queue's least recently used cache page can be overwritten. This is a measure of concurrency contention within the server.

The K come from Art Kagel and KBR, Kagel Buffer Ratio, is series of ratios devised by him.