Track device CPU load within a moving time frame. See periods where CPU load is abnormally peaked (load bottlenecks, service attacks, or other service incidents) or abnormally slow (server dropped from load balancer configuration, kernel panic) and more.

Configure a CPU utilization threshold:

• Name. Used in the Threshold library and the title on the Alert Center Dashboard.
• Notification Policy. (Optional) Select the notification policy to apply to this threshold. The policy initiates notifications when an item is outside the configured threshold limits.
• Threshold Check Interval. Enter a time interval for Alert Center to check the Network Performance Monitor database for items that are out of the threshold limits.

  Automatically resolve items no longer out of threshold. Select this option if you want Alert Center to automatically resolve items when they return to the value within the threshold limit.

Note: Notification policies are optional for most thresholds. If you do not select a notification policy, no notifications are generated for the threshold, but a dashboard report listing the out of threshold items still appears on the Alert Center Home page.

Add Condition Rules:

• Report. Select CPU utilization threshold monitor method, device or CPU option.
  • Device-wide combined CPU utilization. Select this option to calculate the threshold based on the average-combined CPU load evaluated as a single device. Therefore, if the average CPU performance of a quad-core CPU (an average of all CPU performance combined) exceeds the threshold, then an alert is triggered.
  • Individual CPU utilization. Select this option to calculate the threshold based on individual CPU load for the selected device. Therefore, if one of the CPUs on a quad-core CPU exceeds the threshold, then an alert is triggered.
  • CPU Utilization (average). Choose a trend (Exceeds, Falls-below) and a value for average CPU load in percent.
• Duration. Specify a time range or "rolling interval" for calculating an average to compare to CPU Utilization threshold.

  Tip: Notification policies are optional for most thresholds. Out of threshold items still appear on the Alert Center dashboard.

Note: Configure the threshold check interval for a longer time than the sampling interval for thresholds relating to trends, such as percent utilization. Configure it for a time the same as (or similar to) the sampling interval when configuring a threshold for a health check.

Tip: Avoid setting the threshold check interval to a very short time, as this can degrade system performance. In general, setting the threshold check interval to less than five minutes is not advised.

Select Applied Devices

• Apply to All Devices. By default, the threshold monitors all applicable hosts.

  Exclude Devices. Select to build or apply an exclusion list.

• Click Apply this Threshold to Specific Devices to choose the hosts to which the threshold applies.

  Note: Configure the threshold check interval for a longer time than the sampling interval for thresholds relating to trends, such as percent utilization. Configure it for a time the same as (or similar to) the sampling interval when configuring a threshold for a health check.

Tip: Avoid setting the threshold check interval to a very short time. Aggressive intervals can degrade system performance. In general, setting the threshold check interval to less than five minutes is not advised.

Monitor the absence or presence of logs based on the filter query you have saved.

To configure a Log Management Filter Frequency threshold:

1. Select SETTINGS > Actions & Alerts > Alert Center Libraries from the main menu, then select the Thresholds tab in the interface that appears.
2. Click the Add icon to launch the Select Threshold Type dialog.
3. Choose Log Management Filter Frequency from the options displayed, then click Select.
4. Use the General tab to configure the following threshold settings:

• Name. Used in the Threshold library and the title on the Alert Center Dashboard.
• Log Filter. Select the desired log filter from filter library using the drop-down menu.
• Notification Policy. (Optional) Select the notification policy to apply to this threshold. The policy initiates notifications when an item is outside the configured threshold limits.
• Threshold Check Interval. Enter a time interval for Alert Center to check the database for items that are out of the threshold limits.

  Tip: Avoid setting the threshold check interval to a very short time, as this can degrade system performance. In general, setting the threshold check interval to less than five minutes is not advised.

• Automatically resolve items no longer out of threshold. Select this option if you want Alert Center to automatically resolve items when they return to the value within the threshold limit.

Note: Notification policies are optional for most thresholds. If you do not select a notification policy, no notifications are generated for the threshold, but a dashboard report listing the out of threshold items still appears on the Alert Center Home page.

Condition

• Presence/Absence. Enable the desired option to report the threshold as breached when the results of the selected log filter query appear/do not appear with the specified frequency and within the specified duration.

  Warning: When Absence is selected, the threshold will be considered breached with a count of zero for enabled log sources that may not be collecting log data. This could result in excessive alerts and notifications depending on your Log Management and Alert Center settings and configuration.

• Frequency. Indicates the number of records WhatsUp Gold finds matching the applied filter criteria within the specified duration.
• Duration. Specify the length of time in which the results of the log filter query must appear/not appear for a single log source to consider the threshold breached.

Use the Applied Log Sources tab to which log source or sources this threshold should be applied:

• Apply this threshold to ALL applicable log sources. Enable this option to apply the threshold to all available log sources.
• Exclude log sources. When the threshold is applied to all log sources, you can enable this option, then specify one or more specific sources to be excluded from filter frequency threshold monitoring. Click the Add icon, then select either Groups or Devices. Use the subsequent dialog to select the group(s) or device(s) to exclude depending on your selection.
• Apply this threshold to specific log sources. Enable this option to apply the threshold to one or more user-defined log sources.

Clone a threshold based on a custom or built-in configuration:

1. Click on a threshold on the Thresholds Library panel you want to copy.
2. Click the Copy button, and click OK to create a new Log Management Filter Frequency Threshold.

   The Edit Log Management Filter Frequency Threshold dialog displays.

3. Save or customize your new threshold, either:
   • Type in a new value for Name field (or keep the default) and click OK to save to the Thresholds Library.
   • Follow the Edit Log Management Filter Frequency Threshold instructions.

Delete an existing Log Management Filter Frequency Threshold:

1. Select Log Management Filter Frequency Threshold you want to delete from the Log Management Filter Frequency Threshold panel.
2. Click the Delete button, and then click Yes to confirm the deletion.

   The Log Management Filter Frequency Threshold configuration is deleted.