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CPU利用率高和性能不平衡警报

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适用场景

  • ONTAP 9
  • AFF - A300
  • MGWD
  • 主机

问题描述

  • 一个节点频繁出现性能不平衡警报

Event: Cluster Load Imbalance Threshold Breached
The performance capacity used counter indicates a load difference of 74% between the nodes on cluster XXX-XXX-XXX and has triggered a WARNING event based on the system threshold of 30%

  • 尽管IOPS较低、但CPU利用率始终保持在70%以上
  • 前几个CPU域是主机操作系统,主要来自   top 命令输出中的mgwd 

PID USERNAME    THR PRI NICE   SIZE    RES STATE    C   TIME    WCPU COMMAND

3718 root        345  52    0  2217M  1629M uwait    1    ??? 474.57% mgwd