Hp Matrix Operating Environment Software Uživatelský manuál stáhnout pdf (Strana 122)

Table 20 Attributes available for use in analysis queries: Power Tab (continued)

DescriptionAttribute NameSection

The system's estimated peak power

consumption when all resources are fully

consumed.

Max Power (W)Power Capacity

The system's estimated power consumption

while idle.

Min Power (W)

This value indicates whether the system's

minimum and maximum power consumption

values are known. The minimum and maximum

power consumption values have been tested

via Integrated Lights-Out (iLO) or manually

entered for the system.

See “Calibrating power on actual systems”

(page 84) for information on setting the power

calibration on systems where this value is

false.

Power Calibrated

NOTE: Peak, 15-minute sustained, 90th percentile, and average values are available as separate

attributes. See Table 14 (page 115).

Custom query examples

Example: Finding large underused VMs that could be replaced with medium or small

VMs

Background

In this example, the data center has three sizes of Hyper-V virtual machines — small, medium, and

large. A medium VM has two vCPUs and 4 GB of RAM. A large VM has four vCPUs and 8 GB

of RAM. Most applications in the data center start to have performance issues if the CPU utilization

is greater than 80%, or if the memory use is within 1 GB of the capacity.

As administrator, you want to locate large, underused VMs that could be replaced by smaller VMs.

Requirements

To find the oversized VMs, you need to develop a query to find systems that:

• Are Hyper-V VMs

• Have four cores

• Use less than 1.6 cores most of the time

• Use less than 3 GB of RAM most of the time

Using the Capacity Analysis query language, this query can be expressed as follows:

Match ALL of:

Type = MICROSOFT HYPERV VMGUEST

Core count = 4

15-Min CPU (cores) <= 1.6

15-Min Memory (GB) <= 3

122 Using Capacity Analysis

1 2 ... 117 118 119 120 121 122 123 124 125 126 127 ... 232 233

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