Skip to main content
NetApp Knowledge Base

How to identify transient workload bursts using "sysstat" command

  1. Last updated
  2. Save as PDF
Views:
3,854
Visibility:
Public
Votes:
2
Category:
ontap-9
Specialty:
Perf
Last Updated:

Applies to

ONTAP 9

Description

It is complicated to troubleshoot a performance issue caused by a bursty workload.  As most performance statistics are the calculated averages in a period of time, mostly 1 or 5 minutes in our existing performance monitoring and troubleshooting tools. These averages can not represent the real resource bottlenecks during the bursts, thus in some cases, a more granular data collection is needed to better understand the throughpout, CPU scheduling and  CP behaviors. 

sysstat is a great tool to collect some fundamental statistics at a much more granular level, seconds or even milliseconds. 

This article describes a method to detect those transient workload spikes using sysstat command, especially those short bursts that only last for hundreds of milliseconds, or even just tens of milliseconds. 

 

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.