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High write latency from Back to Back CPs caused by disk pressure

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316
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Public
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Category:
ontap-9
Specialty:
perf
Last Updated:

Applies to

ONTAP 9

Issue

  • The write response of some hosts is very slow and no error is reported
  • Applications report high IO wait particularly for write operations.
  • Backup slowness is reported during high write latency
  • Monitoring tools report increase in CP latency with increase in Write operations

2009525159 - Monitoring tools.jpg

 

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