Hardware (overkill)
Some real machine 3.4GHz
32GB
Software
CentOs 7.2
java version "1.8.0_71-b15"
http://www.bebbosoft.de/gfx/fwbejy.gif

bb_util LRUCache: ratio=0.1; size=8(hardRefs=15); gets=68;hit=60 => 88.24%