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QoS 統計と Qtree 統計のパフォーマンスの不一致

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環境

ONTAP 9

問題

  • お客様は、「statistics qtree show」コマンドと「qos statistics workload properties show」コマンドの出力に矛盾があることに気付きました。
  • 「qos statistics workload properties show」コマンドは、「statistics qtree show」コマンドと比較して、大幅に高いIOPSを報告しました。

cluster::*>qos statistics workload characteristics show -iterations 0 -workload s5e9975ipdv-wid49299 
Workload       ID    IOPS     Throughput Request Size Read Concurrency 
--------------- ------ -------- ---------------- ------------ ---- ----------- 
-total-        -   356708    1947.77MB/s     5725B   8%      223 
s5e9975ipdv-w..  49299   278082     19.22MB/s      72B  0%      182 

cluster::*>statistics qtree show -interval 5 -iterations 50
                           NFS CIFS CSS Internal *Total 
             Qtree    Vserver Volume   Ops  Ops Ops    Ops   Ops 
----------------------------- ------------ ------ ----- ---- --- -------- ------ 
xxxxxxxxxxxx:vol2/s5e9975lib1 xxxxxxxxxxxx  vol2 22371   0   0     0  22371 
xxxxxxxxxxxx:vol1/s5e9975ipdv xxxxxxxxxxxx  vol1 14891   0   0     0  14891 

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