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フラッシュキャッシュヒット率の監視に使用するコマンドはどれですか?

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ontap-9
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Perf
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環境

  • ONTAP 9.8
  • Flash Cache

回答

  1. Flash Cache ヒット率を表示するには、次のコマンドを使用します。

例:

::*> statistics start -sample-id test -object ext_cache_obj -counter inserts|hit_percent
Statistics collection is being started for sample-id: test

::*> statistics stop -sample-id test
Statistics collection is being stopped for sample-id: test

::*> statistics show -sample-id test

Object: ext_cache_obj
Instance: ec0
Start-time: 12/7/2021 22:11:25
End-time: 12/7/2021 22:11:45
Elapsed-time: 20s
Scope: fas8200-dal-1a

   Counter                            Value
   -------------------------------- --------------------------------
   hit_percent                           0%
   inserts                              0

Object: ext_cache_obj
Instance: ec0
Start-time: 12/7/2021 22:11:25
End-time: 12/7/2021 22:11:45
Elapsed-time: 20s
Scope: fas8200-dal-1b

   Counter                            Value
   -------------------------------- --------------------------------
   hit_percent                           0%
   inserts                              0
4 entries were displayed.

 

2. Flash Cache のパフォーマンスデータを一定の間隔で継続的に表示するには、次のコマンドを使用します。

例:

::*> statistics show-periodic -object ext_cache_obj -instance ec0 -interval 2 -iterations 5 -counter inserts|hit_percent
fas8200-2n-dal-1: ext_cache_obj.ec0: 12/7/2021 22:00:08
   hit   Complete   Number of
 percent  inserts Aggregation Constituents
 ------- -------- ----------- ------------
    0%     0    n/a    n/a
    0%     0    n/a    n/a
    0%     0    n/a    n/a
    0%     0    n/a    n/a
    0%     0    n/a    n/a
fas8200-2n-dal-1: ext_cache_obj.ec0: 12/7/2021 22:00:18
   hit   Complete   Number of
 percent  inserts Aggregation Constituents
 ------- -------- ----------- ------------
Minimums:
    0%     0     -     -
Averages for 5 samples:
    0%     0     -     -
Maximums:
    0%     0     -     -

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