6.3

Table 1‑19. Disk Metrics for Virtual Machines (Continued)
Metric Key Metric Name Description
disk|totalReadLatency_average Disk Read Latency The average amount of time taken for a
read from the perspective of a Guest
OS. This is the sum of Kernel Read
Latency and Physical Device Read
Latency.
disk|totalWriteLatency_average Disk Write Latency The average amount of time taken for a
write from the perspective of a Guest
OS. This is the sum of Kernel Write
Latency and Physical Device Write
Latency.
disk|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.
Virtual Disk Metrics for Virtual Machines
Virtual disk metrics provide information about virtual disk use.
Table 1‑20. Virtual Disk Metrics for Virtual Machines
Metric Key Metric Name Description
virtualDisk|usage Usage Average CPU usage as a percentage.
virtualDisk|totalLatency Total Latency Total latency.
virtualDisk|commandsAveraged_average Commands Per Second Average number of commands per
second.
virtualDisk|numberReadAveraged_average Read Requests Average number of read commands
issued per second to the virtual disk
during the collection interval.
virtualDisk|numberWriteAveraged_average Write Requests Average number of write commands
issued per second to the virtual disk
during the collection interval.
virtualDisk|read_average Read Rate (KBps) Rate of reading data from the virtual
disk in kilobytes per second.
virtualDisk|totalReadLatency_average Read Latency (ms) Average amount of time for a read
operation from the virtual disk. Total
latency = kernel latency + device latency.
virtualDisk|totalWriteLatency_average Write Latency (ms) Average amount of time for a write
operation to the virtual disk. Total
latency = kernel latency + device latency.
virtualDisk|write_average Write Rate (KBps) Rate of writing data from the virtual disk
in kilobytes per second.
virtualDisk|busResets_summation Bus Resets The number of bus resets in the
performance interval.
virtualDisk|commandsAborted_summation Commands Aborted The number of disk commands aborted
in the performance interval.
virtualDisk|readLoadMetric_latest Read Load Storage DRS virtual disk metric read
load.
virtualDisk|readOIO_latest Outstanding Read Requests Average number of outstanding read
requests to the virtual disk.
virtualDisk|writeLoadMetric_latest Write Load Storage DRS virtual disk write load.
Chapter 1 Metric Definitions in vRealize Operations Manager
VMware, Inc. 21