6.3

Table 1‑34. Disk Metrics for Host Systems (Continued)
Metric Key Metric Name Description
disk|deviceWriteLatency_average Physical Device Write Latency (ms) The average time taken to complete
a write from the physical device.
disk|kernelWriteLatency_average Kernel Disk Write Latency (ms) The average time spent in ESX
Server VMKernel per write.
disk|totalWriteLatency_average Disk Write Latency (ms) 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|queueWriteLatency_average Queue Write Latency (ms) The average time spent in the ESX
Server VMKernel queue per write.
disk|deviceLatency_average Physical Device Command Latency
(ms)
The average time taken to complete
a command from the physical
device.
disk|kernelLatency_average Kernel Disk Command Latency (ms) The average time spent in ESX
Server VMKernel per command.
disk|queueLatency_average Queue Command Latency (ms) The average time spent in the ESX
Server VMKernel queue per
command.
disk|diskoio Number of Outstanding IO
Operations
Number of Outstanding IO
Operations.
disk|diskqueued Queued Operations Queued Operations.
disk|diskdemand Demand Demand.
disk|sum_queued_oio Total Queued Outstanding operations Sum of Queued Operation and
Outstanding Operations.
disk|max_observed Max Observed OIO Max Observed IO for a disk.
disk|maxTotalLatency_latest Highest Latency Highest Latency.
disk|maxQueueDepth_average Max Queue Depth Maximum queue depth during the
collection interval.
disk|scsiReservationConicts_summation SCSI Reservation Conicts SCSI Reservation Conicts.
Memory Metrics for Host Systems
Memory metrics provide information about memory use and allocation.
Table 1‑35. Memory Metrics for Host Systems
Metric Key Metric Name Description
mem|host_contentionPct Contention (%) Percent host contention.
mem|host_contention Contention (KB) Host contention in kilobytes.
mem|host_usage Host Usage (KB) Machine usage in kilobytes.
mem|host_demand Machine Demand (KB) Host demand in kilobytes.
mem|host_usageVM Overall Memory used to run VMs on
Host (KB)
Overall memory used to run
virtual machines on the host in
kilobytes.
mem|host_provisioned Provisioned Memory (KB) Provisioned memory in kilobytes.
mem|host_minfree Minimum Free Memory (KB) Minimum free memory.
mem|reservedCapacityPct Reserved Capacity (%) Percent reserved capacity.
Chapter 1 Metric Definitions in vRealize Operations Manager
VMware, Inc. 31