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使用 CIFS 基于访问的枚举时对性能的影响

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ontap-9
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适用于

  • ONTAP 9
  • CIFS
  • 访问基础枚举 (ABE)

问题

当性能问题与 ABE 相关时,可能会出现部分或全部以下症状:

  • ABE 在一个或多个 CIFS 共享上启用(这绝对必须存在)
  • 启用 ABE 的 CIFS 共享上延迟非常高,可能达到数百毫秒
  • 读取和写入 I/O 请求的响应非常缓慢。
  • 查看 qos statistics volume latency show 命令,显示大多数延迟位于Data列下
  • 查看 perfstat 部分"QoS Workload Report",显示工作负载在 CPU_wafl_exempt 上的等待时间,可能达到数百毫秒
  • 共享被许多用户访问
  • 共享具有较高的文件数量(数百万个文件)

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