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Storage Path Counters

Performance counters are modeled using the PerfCounterInfo data object type. Each instance of a PerfCounterInfo data object contains metadata about a specific metric available from the system. The storage path group of performance counters supports real-time performance metrics (such as latency and read- and write-speeds) for I/O operations on a storage path.

Counter StatsType Unit Levels Per
Device
Level
RollupTypes Labels Entity Instance/
Aggregate
ESX
Versions
busResets deltanumber23summation Storage Path Bus Resets
Number of SCSI-bus reset commands issued during the collection interval
commandsAborted deltanumber23summation Storage Path Command Terminations
Number of SCSI commands terminated during the collection interval
commandsAveraged ratenumber33average Average commands issued per second HostSysteminstance5.0
5.1
5.5
6.0
6.5
6.7
Average number of commands issued per second on the storage path during the collection interval
maxTotalLatency absolutemillisecond33latest Highest latency HostSystemaggregate5.0
5.1
5.5
6.0
6.5
6.7
Highest latency value across all storage paths used by the host
numberReadAveraged ratenumber33average Average read requests per second HostSysteminstance5.0
5.1
5.5
6.0
6.5
6.7
Average number of read commands issued per second on the storage path during the collection interval
numberWriteAveraged ratenumber33average Average write requests per second HostSysteminstance5.0
5.1
5.5
6.0
6.5
6.7
Average number of write commands issued per second on the storage path during the collection interval
read ratekiloBytesPerSecond33average Read rate HostSysteminstance5.0
5.1
5.5
6.0
6.5
6.7
Rate of reading data on the storage path
throughput.cont absolutemillisecond44average Storage Path Throughput Contention
Average amount of time for an I/O operation to complete successfully
throughput.usage ratekiloBytesPerSecond44average Storage Path Throughput Usage
Storage path I/O rate.
totalReadLatency absolutemillisecond33average Read latency HostSysteminstance5.0
5.1
5.5
6.0
6.5
6.7
Average amount of time for a read issued on the storage path. Total latency = kernel latency + device latency.
totalWriteLatency absolutemillisecond33average Write latency HostSysteminstance5.0
5.1
5.5
6.0
6.5
6.7
Average amount of time for a write issued on the storage path. Total latency = kernel latency + device latency.
write ratekiloBytesPerSecond33average Write rate HostSysteminstance5.0
5.1
5.5
6.0
6.5
6.7
Rate of writing data on the storage path

 

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