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What happens to service latency if a node failure occurs in a Node Act-Act cluster with high CPU usage?

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Category:
ontap-9
Specialty:
perf
Last Updated:

Applies to

  • ONTAP 9
  • High CPU usage scenarios (60-70%)

Answer

When a node failure occurs in a Node Act-Act cluster where both nodes are operating at high CPU usage (60-70%), the following impacts on service latency can be observed:

  • Service Continuation: The service will continue to run after the failover.
  • Increased CPU Latency: Due to the high CPU load on the remaining node, there will be an increased waiting time for CPU processing, leading to higher latency.
  • Data Access Delays: The latency in CPU processing will result in slower data access times after the failover.

Recommendation:

  • To avoid processing delays after a failover, ensure that the CPU usage on both nodes in an Act-Act configuration remains below 50%.

Additional Information

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