Each performance view includes controls for customizing
how information is displayed. The type of view and the resources that
you are viewing determine which controls are available.
- View chart
- View performance information in a chart format. The chart shows
a visual representation of how resource performance trends over
time. Each line on the chart represents a metric and a resource.
The y-axis shows the unit of measurement for a metric. If more metrics
were selected with a different unit of measurement, an extra
y-axis is shown on the right side of the chart window.
- Hover the mouse pointer over points on a line to view a snapshot
of performance information at a specific time.
- View table
- View performance information in a table format. Each row
represents a resource and a time stamp. Each column represents
a metric. You can view other metrics and information for a resource
by right-clicking anywhere in the header row for the table and
selecting more columns. The type of resource determines the metrics
and information that is available.
- For information how to filter, sort, and customize the columns
in a table, see Customizing lists.
- Metrics
- Add metrics to the performance chart. On the Select Chart
Metrics dialog, metrics are organized into Volume, Disk, Pool, Port, and Node categories.
The metrics and categories that are available depend on the type of resource that is being shown in
the chart. The number next to the name of the category represents the number of metrics that are
currently selected from that category.
- You can select multiple metrics at the same time and from
different categories, but you cannot include more than two unit types in the same view. For example, if you select
metrics that use % and ops/s as units of measurement, you cannot select more metrics that use
different units of measurement such as KiB/op or MiB/s.
- For a list of metrics that you can view for resources, see Performance metrics.
- Hide
and show resources
- When the chart includes multiple resources, you can click
the icon next to a resource to show only the line for that resource.
Each icon is shown in a different color to match the color of
line for the resource.
- You can also show and hide resources in the chart by selecting
resources in the chart legend. To select multiple resources
at the same time, press Shift or Ctrl and click those resources.
Press Shift and click to select consecutive rows in the legend;
press Ctrl and click to select non-consecutive rows.
- You can show up to 10 resources in a chart at the same time.
- Specify
granularity
- Determine the granularity of the data that is shown in a
performance view. Granularity determines the points that are
shown on the y-axis of a chart, the points on the lines in a
chart, and the rows in a table. When you first view performance
information, the default time range is the last 12 hours and the
granularity matches the frequency of data collection by the
performance monitor (sample).
- To change the granularity of chart or table, select one
of the following options from the granularity menu:
(daily)- Set the granularity to show 1-day increments for performance information
that is shown on the chart and table.
- This granularity is only available if the time range of the chart
is more than 1 day.
(hourly)- Set the granularity to show one-hour increments for performance
information that is shown on the chart and table.
- This granularity is only available if the time range of the chart
is more than 1 hour.
(Sample)- Set the granularity to match the frequency of data collection
by a performance monitor. For example, if a performance monitor
is scheduled to collect sample data every 15 minutes, each
point on the chart is shown in 15-minute increments.
- This granularity is only available if the time range of the chart
is less than 2 weeks.
- If the performance monitor
collects sample data at 1-minute intervals, data is displayed
as 1-minute intervals in the chart only when data is available
for all of the selected time range. If data is not available
at 1-minute intervals for any portion of the selected time
range, the data is displayed in 5-minute intervals.
- For example, the performance
monitor for a resource collects sample data every 5 minutes.
Six hours ago, the performance monitor was changed to start
collecting data every minute. You want to view sample data
for the resource for the last 12 hours. However, the performance
monitor did not collect sample data every minute for 6 of
the last 12 hours. Therefore, the data is displayed in 5-minute
intervals rather than 1-minute intervals.
Restriction: Each granularity has a maximum
time range for displaying data. This time range is dynamically
calculated based on the resources and metrics that are shown
on the chart, and the data points per line. When the maximum
range is exceeded, the granularity icon is disabled and a message
indicates that there are too many lines on the chart. To avoid
this problem, reduce the time range or the number of resources
or metrics that are selected.
- Specify a time range
- The time range of the performance information is shown below
the chart. You can change this range to display information
for different times when data was collected. When you first access
the performance view, the default time range is the last 12
hours.
- Ensure that performance data was collected during the time
range that you select. If data was not collected during the
time range, the chart and table are blank. If data collection
was interrupted during the time range, the chart and table show
gaps for the time increments when data was not collected.
- For example, if you select a time range for the last 7 days,
but data was not collected on days 4 and 5, the lines in the
chart do not show data for days 4 and 5.
- Hide and show
chart controls
- The performance view lists the names of resources that are
being shown in the chart and the controls for customizing that
chart. Click the left arrow icon to hide the controls and display
the chart in the entire window. Click the right arrow icon again to
show the controls.
- Export information about the chart to a
file
- Export information on a performance view to a CSV file.
- Open the performance
view in a separate web browser window
- Open a duplicate of the current performance view in a separate
web browser window. You can change the information that is displayed
in this separate window while retaining the original performance
view for comparison.
- Synchronize the time range across all
the open performance views
- Synchronize the time range across all the performance views
that are displayed in separate browser windows. Use this action
when you change the time range in a performance view and want
to apply the same time range to the other performance views.
-
Restriction: This action affects only the performance
views that are displayed in separate browser windows. The time
range of the performance view that is shown as part of the
main window for the GUI is not affected.
- For example, you can view the storage system volumes that
are assigned to a server. You can then open separate browser
windows for the host connections, pools, and managed disks that
are related to one of the volumes. If you change the time range
in the performance view for host connections, click the synchronize
button to apply the same time range to the views for pools and
managed disks. The performance view of the original volume is
not changed.
- Actions for managing the resources in the chart legend
- The chart legend in bottom section of the view shows more
information about the selected resources. This information is
organized into rows and columns, where each row represents a
resource.
- When you select one or more resources in the legend, the
following actions are available in the Actions menu:
- View Properties
- View key details about a resource, including asset, status, configuration,
capacity, and performance information.
- View resource Performance
- View the performance of resources that are internal or related
to a resource in the chart legend. For example, when you
view the performance of a SAN Volume Controller,
you can right-click it and view the performance of its internal
resources, such as disks, volumes, ports, managed disks,
and back-end storage.
- Information about an internal or related resource is shown in
a separate web browser window. This window uses the same
time range as the performance view in the main window of
the GUI.
Restriction: If performance data was not collected
for an internal or related resource, that resource is not
shown in the view. For example, if you right-click a storage
system and select Volume performance,
only the volumes for which performance data was collected
are shown.
- For more information about the resources that you can view in
the chart legend, see Resources in the chart legend.
- Key Metrics View
- View a set of predefined metrics for resources in the chart legend.
- Custom View
- Customize the set of metrics that are shown for resources in the
chart legend.
