Dell-EMC
E20-885 · Question #39
A customer runs a CAD/CAM application on an EMC VNX for File. The application is accessed by users at multiple sites. The users report degraded response during peak access periods. Performance…
The correct answer is A. Multi-threaded sequential reads causing random access patterns. See the full explanation below for the reasoning.
Question
A customer runs a CAD/CAM application on an EMC VNX for File. The application is accessed by users at multiple sites. The users report degraded response during peak access periods. Performance monitoring of the file system shows a higher than expected disk queue length and a higher than expected number of unused blocks pre-fetched. What is the likely cause of the performance issue?
Options
- AMulti-threaded sequential reads causing random access patterns
- BSingle-threaded sequential reads flooding cache
- CMulti-threaded random reads degrading per-thread performance
- DSingle-threaded random reads overutilize pre-fetching
How the community answered
(26 responses)- A77% (20)
- B4% (1)
- C12% (3)
- D8% (2)
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