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FusionStorage 8.0.0 Block Storage Event Reference 03

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0xEE0090004 The Iowait CPU Usage Per Core Is Too High

0xEE0090004 The Iowait CPU Usage Per Core Is Too High


When the iowait CPU usage per core exceeds 90%, this alarm is reported. When the iowait CPU usage per core is lower than 70%, this alarm is automatically cleared.

Applicable Model

Applicable to all models.



Event Type

Event Level

Automatically Cleared





Impact on the System

Services may be interrupted.

Possible Causes

The disk I/O processing time is too long.


  1. On the alarm management page, check whether the PlogServer In Suboptimal State alarm exists on the node where this alarm is generated.
    1. If yes=> Step2.
    2. If no=> Step3.
  2. Wait for half an hour and check whether the alarm is cleared.
    1. If yesno further action is required.
    2. If no=> Step3.
  3. Contact technical support engineers.
Updated: 2019-08-19

Document ID: EDOC1100081413

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