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High latency due to QoS Min throughput

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Category:
ontap-9
Specialty:
perf
Last Updated:

Applies to

  • ONTAP 9
  • Quality of Service (QoS)
  • Adaptive Quality of Service (AQoS)

Issue

  • High volume latency observed at certain times of the day
  • QOS-POLICY-GROUP.XML and VOLUME.XML confirm that volume belongs to a QoS policy group with QoS minimum throughput setting applied. 
  • The following EMS message may be observed:

qos.VioDet.Mintput.Throttle: QoS min-throughput feature has started throttling requests for node: "NODE" with uuid: "UUID".

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