HP ProLiant DL380 G5 Server - Manual (Page 32)

Select Reset to Original Values to return to the original threshold values, or the values from the last time the thresholds
were saved. This option also clears the Synchronize thresholds for all volumes checkbox so that thresholds can be set
individually.
Select Save Thresholds to save any thresholds that have been modified and delete any disabled thresholds.
Creating Thresholds
To create a threshold, select the gray threshold indicator with the left mouse button, holding the button down and
dragging the indicator to the right until you reach the appropriate value. The threshold value displayed in the
indicator changes as you are dragging. Release the mouse button.
Select Save Threshold to create the threshold with the displayed value.
Modifying Thresholds
To modify a threshold, select the threshold indicator with the left mouse button, holding the button down, and drag the
indicator to the right until you reach the appropriate value. The threshold value displayed in the indicator changes as
you are dragging. Release the mouse button.
NOTE: If the indicator moves below 6 percent, it changes to gray to indicate that it is disabled. When you
save the thresholds, disabled thresholds are deleted. A critical threshold can never go above 99 percent, or
lower than a warning threshold plus 3 percent. Therefore, if the warning threshold is 85 percent, the valid
range for the critical threshold is 88 percent to 99 percent. A warning threshold can never be higher than the
critical threshold minus 3 percent. Therefore if the critical threshold is 95 percent, the valid range for the
warning threshold is 6 percent to 92 percent.
Deleting Thresholds
To delete a threshold, select the threshold indicator with the left mouse button, holding the button down, and drag the
threshold indicator to the left until the indicator turns gray.
When you save the thresholds, disabled thresholds are deleted.
Logical Disk Space
• Volume—Name of the logical drive for which statistical information is gathered.
• Free Space (MB)—Unallocated space on the disk drive in megabytes. One megabyte equals 1,048,576 bytes.
• Free Space %—Ratio of the free space available on the logical disk unit to the total usable space provided by
the selected logical disk drive.
• Queue Length—Average number of both read and write requests that were queued for the selected disk during
the sample interval.
• Disk Busy Time % (Thresholds Supported)—Percentage of elapsed time that the selected disk drive is servicing
read or write requests.
Processors
• CPU—Name of the processor for which statistical information is gathered.
• Interrupts/sec—Average number of hardware interrupts the processor is receiving and servicing in each
second. It does not include Deferred Procedure Calls or DPCs, which are counted separately. This value is an
indirect indicator of the activity of devices that generate interrupts, such as the system clock, the mouse, disk
drivers, data communication lines, network interface cards, and other peripheral devices. These devices
normally interrupt the processor when they have completed a task or require attention. Normal thread execution
is suspended during interrupts. Most system clocks interrupt the processor every 10 ms, creating a background
of interrupt activity. This counter displays the difference between the values observed in the last two samples,
divided by the duration of the sample interval.
• % User CPU Time—Percentage of non-idle processor time spent in user mode. (User mode is a restricted
processing mode designed for applications, environment subsystems, and integral subsystems. The alternative,
privileged mode, is designed for OS components and allows direct access to hardware and all memory. The
OS switches application threads to privileged mode to access operating system services.) This counter displays
the average busy time as a percentage of the sample time.
• % Privileged CPU Time—Percentage of non-idle processor time spent in privileged mode. (Privileged mode is a
processing mode designed for operating system components and hardware-manipulating drivers. It allows direct
access to hardware and all memory. The alternative, user mode, is a restricted processing mode designed for
applications, environment subsystems, and integral subsystems. The operating system switches application
threads to privileged mode to access operating system services.) % Privileged CPU Time includes time servicing
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