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HYBRID NETWORKING
© 2010 Taylor & Francis Group, LLC
packet, the RFClient is configured to send a flow installation mes-
sage. By doing this, we are testing a worst-case scenario in which
every control packet results in a change in the network. ese tests are
intended to measure the performance and behavior of the new IPC
mechanism.*
Figure 8.12 illustrates the cumulative distribution of latency val-
ues in three tests. Figure 8.12a shows the latency distribution for a
network of only one switch. In this case, the IPC polling mechanism
is not used to its full extent because just one message will be queued
every time. erefore, the latency for mos ...