This model has three forms: the first form is for programs that have a process heap (user data) less than 2.5 GB and greater than 256 MB (see figure 3).
Comparing cases 3 and 6 shows that identical setups might result in throughputs from 1.8 to 7 GB, depending on the message size.
比较案例3和6可发现，取决于报文的大小，相同的设置可能导致从1.8到7 GB的不同吞吐量。
3
If the data is not copied or duplicated across each instance, what you end up with is 3GB of RAM cache available to each application server, as shown in Figure 7.