跳转到主内容

客户端性能较差,但 ONTAP 延迟正常—解决指南

Views:
92
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
perf
Last Updated:

适用场景

ONTAP 9

  • 内部监控软件或客户问题报告的最终用户延迟较高。
  • 最终用户报告的吞吐量低 / 性能差
  • Data ONTAP 和 NetApp 监控工具在以下情况下会显示低延迟 已审核

示例: vSphere 报告卷延迟较高或 ESX 主机在日志中报告延迟。

客户端性能不佳、但ONTAP延迟良好

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.

示例qos statistics volume latency show 命令显示低延迟

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 0ms 0ms

注意: 此外,由于 qos statistics volume performance show 机下延迟,请检查命令。

有关详细信息,请参见文章:在客户端上看到高延迟,但在 QoS 统计信息卷延迟显示中看不到

 

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.
Scan to view the article on your device