Skip to main content
NetApp Knowledge Base

How to address latency from disks in ONTAP

Views:
1,203
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
perf
Last Updated:

Applies to

ONTAP 9

Description

  • Troubleshoot Disk or aggregate latency in ONTAP
  • Using Active IQ Unified Manager or commands such as qos statistics volume latency show, latency is shown to be in the Disk or Aggregate Processing (Active IQ Unified Manager), and latency is actively impacted on the target volume. 
    • Example:

Workload            ID    Latency    Network    Cluster       Data     Disk    QoS Max    QoS Min      NVRAM  
--------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
-total-              -     4.71ms   185.00us     7.00us   468.00us     4.04ms        0ms        0ms    11.00us
vol1             32140    22.22ms    86.00us   125.00us   904.00us    21.11ms        0ms        0ms     1.00us
-total-              -     4.58ms   253.00us     7.00us   991.00us     3.32ms        0ms        0ms    11.00us
vol1             32140    29.69ms    90.00us   162.00us     2.61ms    26.82ms        0ms        0ms     1.00us
-total-              -     2.55ms   229.00us     8.00us   589.00us     1.71ms        0ms        0ms    13.00us
vol1             32140    18.84ms    61.00us   314.00us   136.00us    18.32ms        0ms        0ms     1.00us
-total-              -     4.33ms   198.00us     9.00us  1221.00us     2.88ms        0ms        0ms    13.00us
vol1             32140   177.16ms   113.00us   226.00us   108.03ms    68.79ms        0ms        0ms     2.00us
-total-              -     4.09ms   233.00us    12.00us  1029.00us     2.81ms        0ms        0ms    12.00us
vol1             32140    37.79ms   215.00us   158.00us     1.84ms    35.58ms        0ms        0ms     1.00us
-total-              -     3.45ms   194.00us    10.00us   780.00us     2.45ms        0ms        0ms    15.00us
vol1             32140    30.85ms    91.00us   138.00us  1169.00us    29.45ms        0ms        0ms     2.00us
-total-              -     2.21ms   210.00us     6.00us   645.00us  1340.00us        0ms        0ms    11.00us

 

CUSTOMER EXCLUSIVE CONTENT

Registered NetApp customers get unlimited access to our dynamic Knowledge Base.

New authoritative content is published and updated each day by our team of experts.

Current Customer or Partner?

Sign In for unlimited access

New to NetApp?

Learn more about our award-winning Support