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Home > Success Center > Network Performance Monitor (NPM) > NPM - Knowledgebase Articles > Interface charts showing dots instead of a line for older data

Interface charts showing dots instead of a line for older data

Created by Zoltán Jalsovszky, last modified by MindTouch on Jun 23, 2016

Views: 2,057 Votes: 3 Revisions: 5

Overview

The interface chart displays recent data correctly, but for older data, you see only dots instead of a line.

 

Capture.PNG

Environment

NPM 10.7 or later

Cause 

This is caused by hourly data older than 30 days, which are not available anymore. The default interface for hourly data retention period is 30 days.

Resolution

Resolve this issue by setting the chart sample interval to Once a day, or by increasing the Interface Statistics hourly retention interval.

 

To change the chart settings

  1. On the chart you having the issues with, click Edit.
  2. Set Sample Interval to Once a Day.
  3. Click Submit.

 

To change the retention settings:

  1. Go to Settings > Polling Settings.
  2. Change Hourly Statistics Retention to 60 or 90 days.
     

Note: Changing the chart and retention settings result in a slightly larger database.

 

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