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削除ワークロードが原因でレイテンシが高くなっています

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Category:
ontap-9
Specialty:
perf<a>パフォーマンスの</a><a>削除</a>
Last Updated:

環境

  • ONTAP 9
  • 削除ワークロード

問題

  • 高レイテンシ qos statistics volume latency show は、ユーザや Data 列などのコマンドで確認できます。
  • これに関連する EMS メッセージは、次のような場合に(から)表示 event log showされます。
[wafl.zombie.susp.msg.threshold:notice]: WAFL(R) is experiencing zombie throttling possibly due to requests for large number of file deletions. [wafl_exempt08: wafl.cp.toolong:error]: Aggregate fas_01_DATA_AGGR experienced a long CP... This message occurs when a WAFL(R) consistency point (CP) takes longer than 30 seconds. A CP lasting more than 30 seconds might cause client latency and potentially a client outage.
  • WAFL 免除処理ドメイン内で CPU 使用率の上昇が観察されることもあります。

 

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