Skip to main content
NetApp Knowledge Base

AIQUM 9.7+ or NSLM may enable workload AQoS causing unexpected latency

Views:
611
Visibility:
Public
Votes:
1
Category:
ontap-9
Specialty:
perf
Last Updated:

Applies to

  • ONTAP 9.3 or later
  • Active IQ Unified Manager (AIQUM) 9.7 or later
  • Adaptive QoS (AQoS)
  • NetApp Service Level Manager (NSLM) 1.2 or later
  • Performance Service Level (PSL)
  • Workloads are created from NSLM or AIQUM

Issue

  • Workloads can be throttled by AQoS without manually creating an AQoS policy explicitly.
  • This unexpected AQoS policy attached to a workload might lead to high latency in the QoS Min delay center. 

Example:

Cluster::> qos statistics volume latency show
Workload             ID    Latency    Network    Cluster       Data       Disk    QoS Max    QoS Min      NVRAM
---------------  ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
...
vol1-wid21368     21368   879.73ms   283.00us     9.00us   498.00us   184.00us        0ms   877.99ms   216.00us
vol2-wid19287     19287   736.25ms   401.00us     8.00us   734.00us   166.00us        0ms   734.91ms   199.00us

Note:

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.