VMware ESX 4.0 - GETTING STARTED UPDATE 1 Guide d'installation télécharger pdf (Page 331)

Performance Metrics C

Performance metrics are collected on ESX/ESXi servers and vCenter Servers for managed objects and the

physical and virtual devices associated with these objects. Each object and device has its own set of data

counters that provide the metadata for the metrics.

The performance metrics for VMware vSphere are organized into tables for each metric group: cluster services,

CPU, disk, management agent, memory, network, system, and virtual machine operations. Each table contains

the following information:

Counter

Lists the display name of each data counter.

Label

Indicates the name of the data counter as displayed in the APIs and advanced

performance charts. In some cases the labels are different in the overview

performance charts.

Description

Provides a brief description of the metric.

Stats Type

Measurement used during the statistics interval. The Stats Type is related to

the unit of measurement and can be one of the following:

Rate - Value over the current statistics interval.

Delta - Change from previous statistics interval.

Absolute - Absolute value, independent of the statistics interval .

Unit

How the statistic quantity is measured across the collection interval, for

example, kiloBytes (KB) and kiloBytesPerSecond (KBps).

NOTE For some statistics, the value is converted before it is displayed in the

overview performance charts. For example, memory usage is displayed in

KiloBytes by the APIs and the advanced performance charts, but it is displayed

in MegaBytes in the overview performance charts.

Rollup Type

Indicates the calculation method used during the statistics interval to roll up

data. Determines the type of statistical values that are returned for the counter.

For real-time data, the value shown is the current value. One of:

Average - Data collected is averaged.

Minimum - The minimum value collected is rolled up.

Maximum - The maximum value collected is rolled up.

Summation - Data collected is summed.

Latest - Data collected is the most recent value.

VMware, Inc. 331

1 2 ... 326 327 328 329 330 331 332 333 334 335 336 ... 369 370

Pas de commentaire

VMware ESX 4.0 - GETTING STARTED UPDATE 1 Guide d'installation Page 331