VMware 4817V62 - vSphere - PC, Руководство администратора

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Performance Metrics
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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:
n
Rate - Value over the current statistics interval.
n
Delta - Change from previous statistics interval.
n
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).
N
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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:
n
Average - Data collected is averaged.
n
Minimum - The minimum value collected is rolled up.
n
Maximum - The maximum value collected is rolled up.
n
Summation - Data collected is summed.
n
Latest - Data collected is the most recent value.
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