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アイドル状態からビジー状態に移行中のワークロードによる突然のレイテンシとCPU利用率は、QoSによって解決されます

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Category:
ontap-9
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perf<a>Performance</a><a>ONTAP</a><a>の CPU 利用率</a>
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環境

  • ONTAP 9
  • FAS/AFFシステム

問題

  • レイテンシが増大し、突然上昇した
    • NFSに影響する可能性があります
  • sysstat - M 1 を使用すると、最もビジーなドメインを確認できます。 

例: sysstat ユーザワークロードが増加したことによる CPU 利用率の上昇を示します(読みやすくするために列を省略)。

Cluster::> node run -node <node> -command sysstat -x 1 CPU NFS CIFS HTTP Total Net kB/s HDD kB/s in out read write 11% 1324 0 0 1324 169 131 5300 0 28% 72 0 0 72 483 526 4928 12 53% 175 0 0 175 254 407 5176 24 23% 143 0 0 143 146 72 4752 0 12% 230 0 0 230 134 259 5808 24 40% 5766 0 0 5766 207 720 44336 36956 53% 108 0 0 108 15698 14391 32340 24 46% 30 0 0 30 30975 30269 29900 0 87% 32124 0 0 32124 576397 53287 203513 12 99% 44334 0 0 44334 659406 45518 256931 251353 99% 43692 0 0 43692 609739 16930 263599 565448 99% 44492 0 0 44492 633509 41562 261366 116257

 

 

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