Specifications

Configuration data includes properties such as CPU speed, CPU or network
interface count, and host name. By default, configuration data is collected in 12
hour intervals.
Performance data includes properties such as total latency, CPU idle, and
throughput. By default, performance data is collected in 10 minute intervals.
Performance data is collected for new data sources immediately, but is not
displayed until configuration data is collected.
If you have calculations based on both configuration and performance data, the
configuration data will be older than the performance data and may affect your
expected calculations. For example, if you just added a cluster, it may take up to
12 hours (or your configuration collection interval) for the information to appear.
To immediately collect configuration information, click Run Now in the Collection
Schedules section of Virtualization Manager.
To see how specific properties are collected, see the KB article about
Virtualization Manager Properties.
You can change the frequency of individual collections by modifying the
collection schedule on the Setup tab in the Collection Schedules section.
Sample collection in a VMware environment
The VMware API provides Virtualization Manager with recent sample values
every 20 seconds, from approximately the previous hour. The sample data is
collected every 20 seconds. This data represents the average value during the
given 20 second period.
If the data collection interval in Virtualization Manager is set to the default 10
minutes, Virtualization Manager collects the 20 second samples from the last 10
minutes. This way it gets 30 values for each performance counter. According to
the type of the sample value, the average, maximum, or last value is used as the
value presented in Virtualization Manager.
Most of the raw values stored in Virtualization Manager are the average values
from the data collection interval, that is, the average values during the last 10
minutes by default.
99
Sample collection in a VMware environment