elasticsearch/cookbook-elasticsearch — pull request #258 by apepper (2014-11-17 14:26:59+00:00)
Title: "allocated_memory" now uses 50% of memory by default.

This is the official recommendation by elasticsearch (see [elasticsearch guide](http://www.elasticsearch.org/guide/en/elasticsearch/guide/current/_limiting_memory_usage.html)) and also specified in the above comment (quote "as one half of total available memory").

Previously 60% of memory where used.