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多数のクライアントが同じファイルにアクセスしようとすると、作成時またはオープン時のレイテンシが高くなる

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Category:
ontap-9
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perf
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環境

ONTAP 9

問題

  • ユーザのレイテンシが高くなる可能性があります。
  • レイテンシは、qos statistics volume latency showData 列に表示されます。
  • 修正リリース以降、バグCONTAP-78130のEMS /イベントログに次のメッセージが記録されることがあります。
Nblade.delayedOplockBreakAck: SMB Clients are showing delays in responding to oplock recalls, potentially due to network latency, heavy processing load, or other factors impacting responsiveness. ONTAP will suspend when locks are assigned to the same file from different clients, which may result in high wait time for CREATE/OPEN calls.

 

 

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