Saving real-time textual performance data
A feature that real-time textual performance monitoring has that real-time graphical performance monitoring does not have is that you can
save the data. Saving the data saves only one set of data from the most recent sampling interval.
1
In the Array Management Window (AMW), do one of the following:
•
Click the
Performance
tab, and then click the
Launch real-time textual performance monitor
link.
•
Select
Monitor
>
Health
>
Monitor Performance
>
Real-time performance monitor
>
View textual
.
The
View Real-time Textual Performance Monitor
dialog is displayed.
2
To select the objects to monitor and the sampling interval, click the
Settings
button.
The
Settings
button is available only when the real-time textual performance monitor is not started.
The
Performance Summary Settings
dialog is displayed.
3
In the
Select an object(s)
list, select the objects for which you want to view performance data.
You can select as many objects as you want. Use
Ctrl-Click
and
Shift-Click
to select multiple objects. To select all objects, select the
Select All
check box.
4
In
Sampling Interval
list, select the sampling interval that you want.
The sampling interval can be from 5 seconds to 3600 seconds. Select a short sampling interval, such as 5 seconds, for a near-real-
time picture of performance; however, be aware that this short sampling interval can affect performance. Select a longer interval, such
as 30 seconds to 60 seconds, if you are saving the results to a file to look at later to minimize the system overhead and performance
impact.
5
Click
OK
.
6
To start collecting performance data, click
Start
.
Data collection begins.
7
Continue data collection for the desired period of time.
8
To stop collecting performance data, click
Stop
.
9
To save the performance data, click
Save As
.
The
Save As
button is enabled only when performance monitoring is stopped.
The
Save Performance Statistics
dialog is displayed.
10 Select a location, enter a filename, and then click
Save
.
You can save the file either as a text file with a default extension of .perf which you can open with any text editor or as a comma
separated values file with a default extension of .csv which you can open with any spreadsheet application.
11 To close the dialog, click
Close
.
Starting and stopping background performance monitor
1
In the Array Management Window (AMW), click the
Performance
tab.
2
Click the
Launch background performance monitor
link.
The
View Current Background Performance Monitor
dialog is displayed.
3
Click the
Start
link.
A warning is displayed stating that performance data is available for a maximum period of seven days and older data is deleted.
4
To confirm, click
OK
.
To indicate that background performance monitoring is in progress, the
Start
link changes to
Stop
, and the system shows an
In
Progress
icon next to the
Stop
link.
About your MD Series storage array
33
