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5–Validation Methods for DCB and FCoE

Validation Step 7—Virtualization Verification

5-30 51031-00 A

6. Configure the test as follows:

 Trigger: any PFC frame

 Post fill: 90 percent after the trigger

 Data size: 512K

 Traffic: 100 percent read on both virtual machines

7. Use Analyzer to capture a trace.

8. Use Expert to analyze the trace, and calculate the average, minimum, and

maximum throughput results per priority.

9. Compare I/O performance for the two virtual machines.

Repeat the entire test, using separate hosts for the iSCSI initiator and the FCoE

initiator, and compare I/O performance.

Validation Results

One virtual machine ran the FCoE read application, and the other virtual machine

ran the iSCSI read application. Figure 5-31 shows the throughput results for

individual and combined applications.

Figure 5-31. FCoE and iSCSI Application Throughput in a Virtual Environment

iSCSI throughput increases when

FCoE traffic decreases in the absence

of PFC pauses

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Qlogic Storage Networking (Unified Fabric Pilot) Guía de instalación Pagina 60