Submit a ticketCall us

WebinarWebinar: A checklist for planning your Network Performance Monitor (NPM) upgrade

Are you ready for your next upgrade? To help you plan smoothly, join this webcast to learn more about, SolarWinds® Orion® Installer, SolarWinds Upgrade Advisor, Upgrades Guides, Training Videos, and other resources available. We’ll share key upgrade planning considerations, lessons learned from customers with practical advice from SolarWinds Product Experts. We’ll also give practical tips to identify the estimated time needed and resources, how to prepare the business and IT staff for changes, ways to plan for required system changes, and more.

Register now.

Home > Success Center > User Device Tracker (UDT) > UDT - Knowledgebase Articles > Things to consider when adjusting the default UDT polling settings

Things to consider when adjusting the default UDT polling settings

Table of contents

Updated September 20, 2018

Overview

This article details why UDT polling is set to 30 minutes by default and what are the things to consider before adjusting the settings.

Environment

All UDT versions

Detail

For example, when polling is set to a 5-minute interval, not all the alerts for the new MAC addresses are triggered.

There might be several reasons for this issue:

Job Time

First off, the time it takes for the jobs to run can greatly vary. Some devices are able to provide their data through SNMP very quickly, so you tend to see no issue. Some however are spending more CPU processing threads on actual data transfers across ports/routes, resulting in the SNMP processes to be delegated to a lower thread. That means that it takes longer for the SNMP results to be returned in the job, causing the jobs to take much longer.
Data import

UDT is one of the most SQL-intensive applications that we have in terms of I/O. So even if a job finishes on time, the results themselves may not show up in the database immediately. Sometimes that data is delayed a few minutes as it finishes other result updates.
View update for the alert

This pertains to the second one above as well. After all the results are in, the view then has to populate with those results. This can be delayed as well as a lower process priority.

 

 

 

Last modified

Tags

Classifications

Public