6.7

Table 1‑5. Statistics Levels
Level Metrics Best Practice
Level 1
n
Cluster Services (VMware Distributed Resource Scheduler) – all
metrics
n
CPU – cpuentitlement, totalmhz, usage (average), usagemhz
n
Disk – capacity, maxTotalLatency, provisioned, unshared, usage
(average), used
n
Memory – consumed, mementitlement, overhead, swapinRate,
swapoutRate, swapused, totalmb, usage (average), vmmemctl
(balloon)
n
Network – usage (average), IPv6
n
System – heartbeat, uptime
n
Virtual Machine Operations – numChangeDS, numChangeHost,
numChangeHostDS
Use for long-term performance monitoring
when device statistics are not required.
Level 1 is the default Collection Level for
all Collection Intervals.
Level 2
n
Level 1 metrics
n
CPU – idle, reservedCapacity
n
Disk – All metrics, excluding numberRead and numberWrite.
n
Memory – All metrics, excluding memUsed and maximum and
minimum rollup values.
n
Virtual Machine Operations – All metrics
Use for long-term performance monitoring
when device statistics are not required
but you want to monitor more than the
basic statistics.
Level 3
n
Level 1 and Level 2 metrics
n
Metrics for all counters, excluding minimum and maximum rollup
values.
n
Device metrics
Use for short-term performance
monitoring after encountering problems or
when device statistics are required.
Because of the large quantity of
troubleshooting data retrieved and
recorded, use level 3 for the shortest time
period (Day or Week collection interval).
Level 4 All metrics supported by the vCenter Server, including minimum and
maximum rollup values.
Use for short-term performance
monitoring after encountering problems or
when device statistics are required.
Because of the large quantity of
troubleshooting data retrieved and
recorded, use level 4 for the shortest
amount of time.
Note When you increase the collection level, the storage and system requirements might change. You
might need to allocate more system resources to avoid a decrease in the performance.
View Performance Charts
The vCenter Server statistics settings, the type of object selected, and the features that are enabled on
the selected object determine the amount of information displayed in charts. Charts are organized into
views. You can select a view to see related data together on one screen. You can also specify the time
range, or data collection interval. The duration extends from the selected time range to the present time.
vSphere Monitoring and Performance
VMware, Inc. 12