Custom groups, Choosing metrics, Custom groups choosing metrics – HP XP Performance Advisor Software User Manual
Page 238
Description
XP or XP7 Disk Array main categories – component selection
tree
Comprises
of the external RAID groups that are managed by the
XP
and XP7 disk arrays. For more information, see
Ext-RG(s)
Drive Types
Comprises
of the individual drive types that are available on the
selected
XP and XP7 disk arrays. Also, includes the RAID groups
for
each of the drive types. The RAID groups further display the list
of
associated physical LDEVs. For more information, see
“Drive
The
above categorization helps you to view the overall performance of an XP or an XP7 disk
array
through various channels of selection.
For example, if your application's response time is high, following is one of the ways to identify
the issue in the XP disk array that is processing your application requests:
1.
Plot the performance graphs of all the ports (Front-end > Ports) to identify the port that is doing
maximum I/Os.
2.
For that port, identify the associated host (Host Groups > Host > Ports).
3.
For that host, plot performance graphs of all the LDEVs and identify the LDEV that is contributing
to the observed high response time.
Click
the plus (+) sign for a main category to navigate through the associated components and
view
their performance graphs for the selected metrics. The components of the same type are
grouped
together. Each component further expands to a subset of components depending on its
level
of hierarchy in the component selection tree. For example, one of the hierarchy of
component
selection for an XP or an XP7 disk array under Host Groups is as follows: Host
Groups
> Individual host groups > Ports > Individual Ports > LDEVs > Individual LDEVs.
•
Host Groups is the main category that displays the individual host groups.
•
Each host group displays a set of associated ports that are grouped in the component type,
Ports.
•
Each port further displays a set of associated LDEVs under the component type, LDEVs.
This logical grouping of components enables easy navigation through different levels of component
types to select and view performance graphs of specific components. In the above example, the
ports are categorized under the host groups. If you notice that the response time of a particular
LDEV is high, drill down to the associated ports to view their performance metrics for the duration
when the LDEV response time is found to be high.
Based
on your requirement, select components that belong to different component types under
different
categories for multiple XP and XP7 disk arrays, and view their performance graphs for
related
metrics in the Chart Work Area.
Custom Groups
Custom Groups displays the individual custom groups you created. These custom groups have
group of LDEVs that you want to monitor frequently. Click an individual custom group under Custom
Groups to view the LDEV main category under which all the associated LDEVs are displayed. For
more information on creating custom groups, see
“Creating custom groups” (page 84)
Choosing metrics
When
you choose an XP or an XP7 disk array, individual components, or component types in the
component
selection tree, all the applicable metrics are populated in the Available Metrics
Choose
Metric Category list under different metric categories. The metrics displayed are categorized
based
on the metric category to which they belong. Select a metric to view the corresponding
238 Using charts