You have a server named Server1 that runs Windows Server 2012. You discover that the performance of Server1 is poor. The results of a performance report
generated on Server1 are shown in the following table.
You need to identify the cause of the performance issue. What should you identify?
1. Excessive paging
2. NUMA fragmentation
3. Driver malfunction
4. Insufficient RAM
Answer: Pending
Correct answer is 3. Driver malfunction
https://technet.microsoft.com/en-us/library/dd279711.aspx
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“Total Processor % Interrupt Time (Collection Rule)
This rule collects the Total Instance of the % Interrupt Time performance counter. By default, a sample is taken every 5 minutes. % Interrupt Time monitors the overall average processor utilization that occurred in Interrupt mode. Only interrupt service routines (ISRs), which are device driver functions run in Interrupt mode. Excessive % Interrupt Time can identify that a device is malfunctioning and serves as a secondary indicator that a device might be contributing to a processor bottleneck.”
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