メインコンテンツへスキップ

VMwareまたはアプリケーションのレイテンシが高いが、アップストリームSFPの不良が原因でONTAPとUMのレイテンシが低い

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

環境

  • ONTAP 9
  • ESXiなどのすべてのユーザ環境
  • NASプロトコルとiSCSI

問題

  • VMware ESXiまたはアプリケーションの応答時間で高レイテンシが発生している
  • ONTAPのレイテンシが低い
  • Active IQ Unified Managerの応答時間も低い

:vSphereから大量のレイテンシが報告されるか、ESXホストからログにレイテンシが報告される

VMwareまたはアプリケーションのレイテンシが高いが、アップストリームSFPの不良が原因でONTAPとUMのレイテンシが低い

2020-09-17T01:31:14.178Z cpu44:2098185)WARNING: ScsiDeviceIO: 1564: Device naa.600a0920002002020202020202020202 performance has deteriorated. I/O latency increased from average value of 744 microseconds to 1515626 microseconds.

qos statistics volume latency show コマンドによる低レイテンシの表示:

Cluster::> qos statistics volume latency show -volume Example_Vol -vserver VS1 Workload ID Latency Network Cluster Data Disk QoS Max QoS Min NVRAM Cloud FlexCache SM Sync VA --------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- -total- - 2.21ms 101.00us 75.00us 400.00us 1.62ms 0ms 0ms 7.00us 0ms 0ms 0ms 0ms Example_Vol.. 3195 1295.00us 478.00us 0ms 777.00us 26.00us 0ms 0ms 14.00us 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.