メインコンテンツまでスキップ

ユーザワークロードの低速SATAディスクが原因で読み取りレイテンシが発生します

Views:
2
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
perf
Last Updated:

環境

  • ONTAP 9
  • FAS2720

問題

  • 読み取りレイテンシは毎日同時に5ミリ秒から15ミリ秒に跳ね上がります。
  •  VMotion またはその他の移行アクティビティが実行されている場合、読み取り遅延は数ミリ秒に増加しました。
  • 遅延センターがディスクからのレイテンシーを表示

::> qos statistics workload latency show
Workload       ID   Latency   Network   Cluster     Data    Disk  QoS Max   QoS Min    NVRAM    Cloud  FlexCache   SM Sync      VA    AVSCAN
--------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
-total-        -   15.13ms   534.00us  1027.00us     0ms     13.57ms  0ms     0ms     0ms     0ms     0ms     0ms     0ms     0ms
vol01-wid39663    39663   15.13ms   534.00us  1027.00us     0ms     13.57ms  0ms     0ms     0ms     0ms     0ms     0ms     0ms     0ms

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.