An answer to your question from yesterday...

gistfile1.txt

All memory for the ring buffer is pre-allocated on start up. A ring-buffer can store either
an array of pointers to entries or an array of structures representing the entries. 
The limitations of the Java language mean that entries are associated with the ring-buffer 
as pointers to objects. Each of these entries is typically not the data being passed itself, 
but a container for it. This pre-allocation of entries eliminates issues in languages that 
support garbage collection, since the entries will be re- used and live for the duration of 
the Disruptor instance. The memory for these entries is allocated at the same time and it is 
highly likely that it will be laid out contiguously in main memory and so support cache striding. 
There is a proposal by John Rose to introduce “value types”5 to the Java language which would allow 
arrays of tuples, like other languages such as C, and so ensure that memory would be allocated 
contiguously and avoid the pointer indirection.