Trend Views

Trend views show the value of a metric across time. Trends show spikes or dips in activity and help identify whether a metric is increasing or decreasing.
HID_Trend_Views
Trend views show the value of a metric across time. Trends show spikes or dips in activity and help identify whether a metric is increasing or decreasing. Trend views provide one or more of the following chart types:
  • Trend Chart
    View a traditional trend line for each device, component, or metric.
  • Stacked Chart
    View a stacked line on top of each other for each device, component, or metric.
Trend views displaying data up to the present moment might contain dips or spikes for the present moment as data is processed.
Maintenance indicators apply to all the devices and components in a site group. When the associated site group is selected in the context, maintenance indicators appear as shading in trend views.
For more information, see Schedule Maintenance Indicators.
When applying a business hours filter to a page as part of your view, the business hours override other business hour settings in the following priority order:
  1. Business hours and time zone explicitly assigned to a view.
  2. Site group that is associated with a business hours filter explicitly applied to a view.
  3. Business hours filter applied to a dashboard or to a context page (user-session level business hours).
  4. Site group that is associated with a business hours filter specified at the context level.
Applying a business hours filter to a trend view displays the same data in the view, but the data with the periods
outside
of the applied business hours are shaded.
For more information:
In this article:
Trend View Options
Trend views let you quickly change the trend lines that are displayed on the graph. The following options also apply to MultiTrend views:
  • To remove a metric from the chart temporarily, right-click the metric in the legend, and click
    Hide
    .
  • To add a metric back into the chart, right-click the metric in the legend, and click
    Show
    .
  • To hide all other metrics, right-click a metric in the legend, and click
    Focus
    .
  • To narrow the view on a precise time frame, click and drag across the time frame in the chart.
    Select a time frame of at least 30 minutes. For MultiTrend views, drill into an individual trend view, then select a time frame. To zoom, non business hours compression must be disabled (the
    Enabled
    checkbox for the
    Compress Non Business Hours
    field is cleared). By default, non business hours compression is disabled.
  • To apply the precise time frame to the entire dashboard, click
    Apply to Dashboard
    at the bottom of the chart.
  • To revert the view to the default settings, click
    Undo
    in the lower-left corner.
Trend View Element Examples
Trend views can include the following elements:
A specific trend view might or might not include the following elements. A specific trend view might include elements in addition to following elements.
  • Baselines
    If available, the baseline trend line lets you determine whether utilization trends are changing. The baseline data
    that is plotted in many views shows statistical deviations from normal performance for a given statistic.
    For more information, see Baseline Calculations.
    Baseline metrics are processed up to hourly and daily increments. When the resolution is less than an hour, data points are interpolated between known hourly data points.
  • Events
    If available, events appear as flags indicating the times that the events occurred.
    Events are based on as-polled data. If a rollup is applied to the trend line, a threshold event might appear outside the trend line.
    Trend charts with events are disabled when the time range is greater than 3 months.
  • Trend Projections
    If available, projections on charts appear as dashed trend lines that predict future performance of metrics. Each projection is based on trends in recent values in the time frame of the chart. Projections help determine whether current performance is within normal bounds.
    By default, each projection includes a future time frame equivalent to one time beyond the current time frame. For example, if the time frame is the Last Hour, the projection shows values for the next hour.
    For views that support projections, you can show or hide the projection data by editing the view settings.
The following image shows the important elements of a trend view:
Percentile metrics appear as dashed lines.
TrendView
TrendView
Compress Non Business Hours in a Trend View
If the resolution is less than one day and business hours filtering is configured, trend views apply shading. The shading differentiates between the selected business hours and non business hours.
For more information about how to configure business hours definitions, see Configure Business Hours Filtering.
The following image shows a trend view with shaded non business hours:
Non_Business_Hours
Non_Business_Hours
You can also configure a trend view to compress non business hours. With non business hours compression enabled (the
Enabled
checkbox for the
Compress Non Business Hours
field is selected), the shaded regions are compressed into a single region equal to the resolution period. The resolution is listed at the bottom of the chart. When non business hours compression is enabled, you cannot zoom.
The following image shows a trend view with compressed non business hours:
Compressed_Non_Business_Hours
Compressed_Non_Business_Hours
Configure a Trend View
To configure a trend chart, customize or edit a trend view. For standard view configuration details, see Customize Views.
Follow these steps:
  1. Select
    Show
    or
    Hide
    from the drop-down list to control any of the following trend lines or data points:
    • Projection
      The line that plots projected average values for twice the current time period.
    • 95th Percentile
      The line that plots the values in the top 5 percent of measurements that were taken during the reporting interval.
    • Events
      The data points that show when events were reported during the reporting interval.
    • Goal Line
      The line that plots the value that you selected as the goal for the metric in this view. This option is available only for some of the trend views.
    Not all trend line options are available for all trend chart types.
  2. Set a value for the
    Goal Line
    if you selected to show it.
    Goal lines serve as visual indicators of fixed metric values. For example, select a value within a critical threshold range to determine whether performance is approaching a degraded level quickly.
  3. Supply a label for the goal line to identify the value that you selected.
  4. Select whether to
    Compress Non Business Hours
    (enable non business hours compression by selecting the
    Enabled
    checkbox for this field).
Hide Gaps in Trend Views
By default,
DX NetOps Performance Management
shows gaps in trend chart types when
DX NetOps Performance Management
does not have data for the item for a timeframe (data does not exist for that data point). You can configure to hide these gaps in trend views, and to show a straight line from the last data point to the next data point.
When configured to hide the gaps, the connected line
does not
reflect the real behavior for the device during the period where data does not exist for that data point. Gaps are visible in exported data.
The following circumstances cause gaps in trend views:
  • The device does not respond to a poll request.
  • The device is down.
  • A network problem causes the poll response to be lost.
  • The data collector is down.
  • For as-polled data, a counter rollover or bad poll occurred.
    For more information about counters, see Configure Counter Behavior.
Follow these steps:
  1. Log in to the data aggregator host.
  2. Create the
    <installation_directory>
    /IMDataCollector/apache-karaf-*/etc/com.ca.im.dm.ribsource.RIBSourceWsImpl.cfg
    file.
    • installation_directory
      The installation directory for the data aggregator.
      Default:
      /opt
    • apache-karaf-*
      The installation directory for Apache Karaf.
      Example:
      apache-karaf-4.2.6
  3. Edit the file and insert the following property configuration to that file:
    gapShowingOn=false
The trend views now hide gaps. To apply the new behavior, refresh the view.
MultiTrend Views
MultiTrend views let you combine trend data from multiple components in a single-line trend chart. You can compare the data from up to 12 components in a single MultiTrend view. You can use MultiTrend views to view data from the following interfaces:
  • Multiple interfaces in a group
  • Interfaces in your inventory with the worst performance metrics
  • Interfaces on a single device
MultiTrend views require more page space than other types of views. To add a MultiTrend view to a dashboard, add it to a single-column area in the layout. Do not add a MultiTrend view to a small section on a dashboard layout.
MultiTrend views also require more space for the PDF output.
The following image shows the important elements of a MultiTrend view:
MultiTrendView
MultiTrendView
MultiViews
MultiViews let you combine statistics from multiple interface charts in a single view. Use MultiViews to diagnose performance issues on a device. For example, you can compare the recent performance of all interfaces on a card in a single view. More MultiViews that query for different types of metrics are available in the Device category when you edit a dashboard.
MultiViews require more page space than other types of views. To add a MultiView to a dashboard, add it to a single-column area in the layout. Do not add a MultiView to a small section on a dashboard layout.
MultiViews also require more space for the PDF output.
The following image shows the important elements of a MultiView:
MultiView
MultiView
Configure a MultiTrend View
To configure a MultiTrend chart, customize or edit a MultiTrend view.
For standard view configuration details, see Customize Views.
Follow these steps:
  1. Specify the
    Sort Direction
    , which is Descending order (highest values first) by default. The sort direction determines which interfaces are reflected in the first pages of trend charts.
  2. Select one of the following
    Standardized Axis
    options for the Y-axis of each trend chart:
    • Fixed at 0 to 100
      Maintain a static range, 0 through 100, for the Y-axis.
    • Calculated
      Let the Y-axis adjust dynamically, based on the range of metric values that are included. The calculated setting is applied to all charts in the view.
    • Scale per Chart
      Let the Y-axis adjust dynamically, based on the range of metric values for each chart in the view. The Y-axis scaling of one chart in a view does not affect the scaling of any other chart.
  3. Select one of the following options for the
    Chart Display Order
    :
    • Display by Metric
      Sort the interface charts by metric value, with the highest (most severe) values shown first, top to bottom.
    • Display by Name
      Sort the interface charts in alphanumeric order, by interface name.
Configure a MultiView
To configure a MultiView, customize or edit the view. For standard view configuration details, see Customize Views.
Follow these steps:
  1. Select a
    Metric Family
    . From the
    Metrics Fields Available
    list, select up to 10 metrics to display in the report. You can select multiple metrics from only one metric family. You can use the arrows to specify an order for the selected metrics and the order is saved.
  2. Select the
    Metric Sort
    , which defines the metric for the primary Y-axis.
  3. Specify the
    Sort Direction
    , which is Descending order (highest values first) by default. The sort direction determines which interfaces are reflected in the first pages of trend charts.
  4. Select one of the following options for the
    Chart Display Order
    :
    • Display by Metric
      Sort the charts by metric value, with the highest (most severe) values shown first, top to bottom.
    • Display by Name
      Sort the charts in alphanumeric order, by device name and then item name. If the
      Metric Calculate Level
      is
      by Device
      , the charts are sorted only by device name.
  5. To determine the level of aggregation for metrics, select the
    Metric Calculate Level
    :
    • by Component
    • by Device
  6. Select one of the following
    Standardized Axis
    options for the Y-axis of each trend chart:
    • Fixed at 0 to 100
      Maintain a static range, 0 through 100, for the Y-axis.
    • Calculated
      Let the first Y-axis adjust dynamically, based on the range of metric values that are included. The calculated setting is applied to all charts in the view.
    • Scale per Chart
      Let the Y-axis adjust dynamically, based on the range of metric values for each chart in the view. The Y-axis scaling of one chart in a view does not affect the scaling of any other chart.
  7. Specify a 1, 2, or 3-column layout.
  8. Specify up to 48 charts per pages.
  9. Specify a
    Maximum Number of Charts
    up to 1200.
Trend/Table Views
Trend/table views provide tables with data. As you hover over each metric, a related trend chart displays. The trend chart shows the metric value over the selected time range for each item. The table shows the values across the entire time range for each item being charted. Some out-of-the box trend/table views show a column with a line graph.
For more information about these views, see Table Views.