F5 BIG-IP Administration Support and Troubleshooting (F5CAB5) exam F5CAB5 Question # 12 Topic 2 Discussion
F5CAB5 Exam Topic 2 Question 12 Discussion:
Question #: 12
Topic #: 2
A BIG-IP Administrator needs to view the CPU utilization of a particular Virtual Server. Which section of the Configuration Utility should the administrator use for this purpose?
A.
Statistics > Module Statistics > Local Traffic > Virtual Addresses
B.
Statistics > Module Statistics > Traffic Summary
C.
Statistics > Analytics > Process CPU Utilization
D.
Statistics > Module Statistics > Local Traffic > Virtual Servers
When a BIG-IP system experiences high overall CPU usage, troubleshooting requires identifying which specific application or service is the primary consumer of resources. While the system-wide performance graphs provide a global view, the granular data necessary to isolate a "top talker" is found in the "Local Traffic" statistics. Navigating to Statistics > Module Statistics > Local Traffic > Virtual Servers allows the administrator to see specific metrics for each configured virtual server, including the number of packets processed, current connections, and critical CPU cycles consumed. This is essential for troubleshooting performance issues where an inefficient iRule, high SSL handshake volume, or complex L7 profiles (like Compression or ASM) might be overtaxing the Traffic Management Microkernel (TMM) for one specific application. By reviewing these basic stats, an administrator can determine if a performance bottle-neck is a system-wide h1ardware issue or if it is isolated to a single virtual server, enabling targeted remediation such as optimizing iRule logic or moving the high-load virtual server to a dedicated device.
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