I am using JMeter 2.11. The following parameters are defined in the jmeter.bat file :
set HEAP=-Xms512m -Xmx12144m
set PERM=-XX:PermSize=64m -XX:MaxPermSize=64m
2014/09/16 10:31:37 WARN - jmeter.control.GenericController: StackOverflowError detected
This error can appear when there is a logical error in your test plan. Please check carefully with adding beanshell listener for printing extra logs within Logical controller such as looping/iterating controller in your test plan.