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高レイテンシは発生しましたが、 qos statistics volume latency show には含まれません

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Category:
ontap-9
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環境

  • clustered Data ONTAP 8.3
  • ONTAP 9
  • CIFS または NFS 接続

問題

  • Unified Manager では高レイテンシが発生しますが、「 qos statistics volume latency show 」に遅延は示されません。

data1 ボリュームの例:

nas-cm95::> qos statistics volume performance show Workload ID IOPS Throughput Latency --------------- ------ -------- ---------------- ---------- -total- - 78 0.07KB/s 111.01ms data1-wid30897 30897 78 0.07KB/s 521.01ms -total- - 84 0.07KB/s 111.01ms data1-wid30897 30897 84 0.07KB/s 521.01ms -total- - 158 0.08KB/s 111.01ms data1-wid30897 30897 158 0.08KB/s 521.01ms -total- - 158 0.08KB/s 111.01ms data1-wid30897 30897 158 0.08KB/s 521.01ms
nas-cm95::> qos statistics volume latency show Workload ID Latency Network Cluster Data Disk QoS NVRAM Cloud FlexCache SM Sync --------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- -total- - 367.00us 155.00us 3.00us 161.00us 0ms 0ms 0.00us 0ms 0ms 0ms data1-wid30897 30897 312.00us 160.00us 0ms 152.00us 0ms 0ms 0.00us 0ms 0ms 0ms -total- - 902.00us 153.00us 5.00us 151.00us 8.00us 0ms 0.00us 0ms 0ms 0ms data1-wid30897 30897 307.00us 150.00us 0ms 149.00us 8.00us 0ms 0.00us 0ms 0ms 0ms -total- - 1139.00us 149.00us 7.00us 141.00us 9.00us 0ms 0.00us 0ms 0ms 0ms data1-wid30897 30897 284.00us 145.00us 0ms 138.00us 1.00us 0ms 0.00us 0ms 0ms 0ms -total- - 343.00us 147.00us 5.00us 145.00us 0ms 0ms 0.00us 0ms 0ms 0ms data1-wid30897 30897 286.00us 146.00us 0ms 140.00us 0ms 0ms 0.00us 0ms 0ms 0ms
  • 遅延センターが大幅な遅延を示すことはありませんが、クライアント側では高遅延が報告されます。

 

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