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Table 5-34. Disk Metrics for Host Systems (Continued)
Metric Key Metric Name Description
disk | numberWriteAveraged_average Writes per second Average number of write
commands issued per second
during the collection interval.
disk | oio Number of Outstanding IO Operations Number of outstanding IO
operations.
disk | queued Queued Operations Number of queued operations.
disk | demand Demand Disk demand.
disk | numberRead_summation Read Rate (KBps) Read rate in kilobytes per second.
disk | numberWrite_summation Write Rate (KBps) Write rate in kilobytes per second.
disk | read_average Read Requests Average number of read requests.
disk | write_average Write Requests Average number of write requests.
disk | busResets_summation Bus Resets Number of bus resets.
disk | commands_summation Commands Issued Number of commands issued.
disk | commandsAborted_summation Commands Aborted Number of commands aborted.
disk | deviceReadLatency_average Physical Device Read Latency (ms) Physical device read latency in
milliseconds.
disk | kernelReadLatency_average Kernel Disk Read Latency (ms) Kernel disk read latency in
milliseconds.
disk | totalReadLatency_average Disk Read Latency (ms) Disk read latency in milliseconds.
disk | queueReadLatency_average Queue Read Latency (ms) Queue read latency in milliseconds.
disk | deviceWriteLatency_average Physical Device Write Latency (ms) Physical device write latency in
milliseconds.
disk | kernelWriteLatency_average Kernel Disk Write Latency (ms) Kernel disk write latency in
milliseconds.
disk | totalWriteLatency_average Disk Write Latency (ms) Disk write latency in milliseconds.
disk | queueWriteLatency_average Queue Write Latency (ms) Queue write latency in milliseconds.
disk | deviceLatency_average Physical Device Command Latency
(ms)
Physical device command latency in
milliseconds.
disk | kernelLatency_average Kernel Disk Command Latency (ms) Kernel disk command latency in
milliseconds.
disk | queueLatency_average Queue Command Latency (ms) Queue command latency in
milliseconds.
disk | maxQueueDepth_average Max Queue Depth Maximum queue depth.
Memory Metrics for Host Systems
Memory metrics provide information about memory use and allocation.
Table 5-35. 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 ESX System Usage (KB) ESX system use in kilobytes.
mem | host_demand Machine Demand (KB) Host demand in kilobytes.
Chapter 5 Metrics for vCenter Server Components
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