6.3

Table 1‑17. Memory Metrics for Virtual Machines (Continued)
Metric Key Metric Name Description
mem|llSwapUsed_average Swap Space Used in Host
Cache
Space used for caching swapped pages in
the host cache.
mem|overheadTouched_average Overhead Touched Actively touched overhead memory (KB)
reserved for use as the virtualization
overhead for the VM.
Datastore Metrics for Virtual Machines
Datastore metrics provide information about datastore use.
Table 1‑18. Datastore Metrics for Virtual Machines
Metric Key Metric Name Description
datastore|commandsAveraged_average Commands per second Average number of commands issued
per second during the collection
interval.
datastore|demand_oio Outstanding IO requests OIO for datastore.
datastore|oio Number of Outstanding IO
Operations
Number of outstanding IO operations.
datastore|demand Demand Datatstore demand.
datastore|totalLatency_average Disk Command Latency (ms) The average amount of time taken for a
command from the perspective of a
Guest OS. This is the sum of Kernel
Command Latency and Physical Device
Command Latency.
datastore|usage_average Usage Average (KBps) Usage Average (KBps).
datastore|used Used Space (MB) Used space in megabytes.
datastore|notshared Not Shared (GB) Space used by VMs that is not shared.
datastore|numberReadAveraged_average Reads per second Average number of read commands
issued per second during the collection
interval.
datastore|numberWriteAveraged_average Writes per second Average number of write commands
issued per second during the collection
interval.
datastore|read_average Read Rate (KBps) Rate of reading data from the datastore
in kilobytes per second.
datastore|totalReadLatency_average Read Latency (ms) Average amount of time for a read
operation from the datastore. Total
latency = kernel latency + device latency.
datastore|totalWriteLatency_average Write Latency (ms) Average amount of time for a write
operation to the datastore. Total latency
= kernel latency + device latency.
datastore|write_average Write Rate Rate of writing data to the datastore.
datastore|maxTotalLatency_latest Highest Latency Highest Latency.
datastore|totalLatency_max Total Latency Max Total Latency Max (ms).
datastore|maxObserved_NumberRead Max Observed Reads per
second
Max observed average number of read
commands issued per second during
the collection interval.
datastore|maxObserved_Read Max Observed Read Rate Max observed rate of reading data from
the datastore.
Chapter 1 Metric Definitions in vRealize Operations Manager
VMware, Inc. 19