vRealize Network Insight collects CPU usage, datastore, memory, and network metrics for VMs.
CPU Usage Metrics
| Metric Name | Metric API Name | Description | Supported by Databus |
|---|---|---|---|
| CPU Co-Stop Rate (%) | cpu.costop.rate.average.percent | Average percentage of time spent by the vCPUs in the |
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| CPU Co-Stop Rate vCPU (%) | cpu.costop_vcpu.rate.average.percent | Average percentage of time spent by a vCPU in the CoStop state due to co-vCPU scheduling contention. |
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| CPU Co-Stop Time | cpu.costop.delta.summation.millisecond | Time spent in the |
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| CPU Ready Rate (%) | cpu.ready.rate.average.percent | Percentage of time that the VM was waiting in line to use the CPU on the host. The CPU ready time depends on the number of VMs on the host and their CPU loads. |
Yes |
| CPU Ready Rate vCPU (%) | cpu.ready_vcpu.rate.average.percent | Percentage of time per vCPU that the VM was waiting in line to use the CPU on the host. The CPU ready time depends on the number of VMs on the host and their CPU loads. |
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| CPU Ready Time | cpu.ready.delta.summation.millisecond | Amount of time a VM is ready to use the CPU but was unable to schedule physical CPU time. The VM cannot schedule physical CPU time when all the VMware vSphere ESXi host CPU resources are busy. |
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| CPU Run Rate (%) | cpu.run.rate.average.percent | Average percentage of time spent in the Run state by all vCPUs of this VM. |
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| CPU Run Rate vCPU (%) | cpu.run_vcpu.rate.average.percent | Average percentage of time spent by a vCPU in the Run state. |
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| CPU Run Time | cpu.run.delta.summation.millisecond | Amount of time spent in the Run state by all vCPUs of this VM. |
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| CPU Usage (MHz) | cpu.usagemhz.rate.average.megaHertz | Amount of actively used vCPU. The CPU Usage metric is associated with the host and not the guest operating system. |
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| CPU Usage Rate (%) | cpu.usage.rate.average.percent | Average percentage of actively used vCPU to the total available CPU. The CPU Usage metric is associated with the host and not the guest operating system. CPU usage rate indicates the average CPU utilization over all available vCPUs in the VM. For example, if a VM with one vCPU is running on a host that has four physical CPUs and the CPU usage is 100%, the VM is using a 100% of one physical CPU. |
Yes |
| CPU Wait Rate (%) | cpu.wait.rate.average.percent | Percentage of CPU time spent in the Wait state such as CPU idle, CPU swap wait, and CPU I/O wait. |
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| CPU Wait Rate vCPU (%) | cpu.wait_vcpu.rate.average.percent | Percentage of CPU time per vCPU spent in the Wait state such as CPU idle, CPU swap wait, and CPU I/O wait. |
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| CPU Wait Time | cpu.wait.delta.summation.millisecond | Amount of CPU time spent in the Wait state such as CPU idle, CPU swap wait, and CPU I/O wait. |
Network Metrics
Network metrics provide information about the network performance of the VM.
| Metric Name | Metric API Name | Description | Supported by Databus |
|---|---|---|---|
| Dropped Rx Packets | net.droppedRx.delta.summation.number | Number of dropped Rx packets to the total number of Rx packets. | Yes |
| Incomplete TCP Session Count | net.incomplete.sessionCount.delta.summation.number | Total number of incomplete TCP sessions received at the VM from other VMs or IP addresses during the time interval.
Note:
This metric is available only for Enterprise License users having a deployment of XXL brick Size Collector. If you scale up the brick size of your existing collector to XXL, you must restart the Run the following command on the Collector CLI: sudo service nfcapd restart |
Yes |
| Dropped Tx Packets | net.droppedTx.delta.summation.number | Number of dropped Tx packets to the total number of Tx packets. | Yes |
| Max Network Traffic Rate (Kbps) | net.usage.rate.maximum.kiloBitsPerSecond | Maximum data transmission rate on the VM over any five minute interval in the selected duration. Maximum network rate includes both transmitted and received data. |
Yes |
| Max Network Tx Rate (Kbps) | net.transmitted.rate.maximum.kiloBitsPerSecond | Maximum data transmission rate on the VM over any five minute interval in the selected duration. | |
| Max Packet Drop Ratio (%) | net.packetDrop.ratio.maximum.percent | Maximum ratio of total packets dropped to total number of packets received over any five minute interval in the selected duration. | |
| Max Packet Drops | net.droppedTotal.delta.maximum.number | Maximum number of dropped packets over any five minute interval in the selected duration. | Yes |
| Multicast Rx Packets | net.multicastRx.delta.summation.number | Total number of multicast packets received across all pNICs (physical network adapters) during the sampling interval. | |
| Multicast Tx Packets | net.multicastTx.delta.summation.number | Total number of multicast packets transmitted across all pNICs during the sampling interval. | Yes |
| Network Max Rx Rate (Kbps) | net.received.rate.maximum.kiloBitsPerSecond | Maximum network data receive rate on the VM over any five minute interval in the selected duration. | |
| Network Packet Count | net.packetsTotal.delta.summation.number | Total number of packets transmitted and received during the interval across all pNICs. | Yes |
| Network Packet Drop Percent (%) | net.packetDrop.ratio.average.percent | Ratio of total number of dropped packets to total number of packets. | Yes |
| Network Packet Drops | net.droppedTotal.delta.summation.number | Total number of packet drops on the VM. | Yes |
| Network Rx Rate (Kbps) | net.received.rate.average.kiloBitsPerSecond | Average rate at which data was received during the time interval. | Yes |
| Network Traffic Rate (Kbps) | net.usage.rate.average.kiloBitsPerSecond | Average rate at which data was received and transmitted during the time interval. | Yes |
| Network Tx Rate (Kbps) | net.transmitted.rate.average.kiloBitsPerSecond | Average rate at which data was transmitted during the time interval. | Yes |
| Rx Broadcast Packets | net.broadcastRx.delta.summation.number | Total number of broadcast packets received during the time interval. | |
| Rx Broadcast Ratio (%) | net.broadcastByRx.ratio.average.percent | Percentage of broadcast packets received during the time interval. | |
| Rx Packet Drop Percent (%) | net.packetDropRx.ratio.average.percent | Ratio of total number of dropped Rx packets to total number of Rx packets. | |
| Rx Packets | net.packetsRx.delta.summation.number | Average number of received packets during the time interval. | Yes |
| Total Network Traffic | net.usage.delta.summation.kiloBytes | Sum of data transmitted and received across all vNICs of the VM. | Yes |
| Total Packets Per Second | net.ppsTotal.rate.average.number | Average rate of received and transmitted packets per second. |
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| Tx Broadcast Packets | net.broadcastTx.delta.summation.number | Number of broadcast packets transmitted during a specified time interval. | |
| Tx Broadcast Ratio (%) | net.broadcastByTx.ratio.average.percent | Average percentage of broadcast packets transmitted during the time interval. | |
| Tx Packet Drop Percent (%) | net.packetDropTx.ratio.average.percent | Ratio of total number of dropped Tx packets to total number of Tx packets. | |
| Tx Packets | net.packetsTx.delta.summation.number | Average number of transmitted packets during the time interval. | Yes |
| Unicast Rx Packets | net.unicastRx.delta.summation.number | Total number of unicast packets received by the host. | |
| Unicast Tx Packets | net.unicastTx.delta.summation.number | Total number of unicast packets transmitted by the host. | |
| Uptime | sys.uptime.absolute.latest.second | Total time elapsed since the last system startup. | |
| Uncommitted Space | storage.uncommitted.absolute.latest.bytes |
Uncommitted space of VM storage. |
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| Snapshot Size | snapshot.used.absolute.latest.bytes | The size of the VM snapshot. |
Datastore Metrics
Datastore metrics provide information about the datastore use.
| Metric Name | Metric API Name | Decription |
|---|---|---|
| Read IOPS | datastore.numberReadAveraged.rate.average.number | Average number of read commands issued per second during the collection interval. |
| Max IO Latency | datastore.maxTotalLatency.absolute.latest.millisecond |
Highest latency value across all datastores used by the VM. |
| Read Latency (ms) | datastore.totalReadLatency.absolute.average.millisecond | Average latency of each read operation issued by this VM on its datastore. |
| Read Rate (Kbps) | datastore.read.rate.average.kiloBytesPerSecond | Read throughput of datastores connected to the VM averaged over 24 hours. |
| RW IOPS | datastore.numberRWAveraged.rate.average.number | Average number of read and write commands sent from the VM to the connected datastores. |
| RW Rate (Kbps) | datastore.usage.rate.average.kiloBytesPerSecond | Read and write throughput of datastores connected to the VM averaged over 24 hours. |
| Write IOPS | datastore.numberWriteAveraged.rate.average.number | Average number of write commands sent from the VM to the connected datastores. |
| Write Latency | datastore.totalWriteLatency.absolute.average.millisecond | Average latency of each write operation issued by this VM on its datastore. |
| Write Rate (Kbps) | datastore.write.rate.average.kiloBytesPerSecond | Write throughput of datastores connected to the VM averaged over 24 hours. |
Memory Metrics for Hosts
Memory metrics provide information about memory use and allocation on the virutal machine.
| Metric Name | Metric API Name | Decription | Supported by Databus |
|---|---|---|---|
| Memory Balloon | mem.vmmemctl.absolute.average.kiloBytes | Average memory of the guest physical memory allocated to vmmemctl for this VM.
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| Memory Swap-In Rate (Kbps) | mem.swapinRate.rate.average.kiloBytesPerSecond | Rate at which the memory is swapped from disk to active memory during the time interval. | |
| Memory Swap-Out Rate (Kbps) | mem.swapoutRate.rate.average.kiloBytesPerSecond | Rate at which the memory is swapped from active memory to the disk during the time interval. | |
| memory Swapped | mem.swapped.absolute.average.kiloBytes | Amount of guest physical memory swapped out to the VM's swap file by the VMkernel. The swapped memory stays on the disk until the VM needs it. This metric refers to VMkernel swapping and not to guest OS swapping. |
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| Memory Usage Rate (%) | mem.usage.absolute.average.percent | Percentage of memory used from the available machine memory. | Yes |
| Overhead Memory | mem.overhead.absolute.average.kiloBytes | Amount of memory allocated to a VM beyond its reserved amount. The VM requires overhead memory to power on. Overhead memory includes the space reserved for the VM frame buffer and various virtualization data structures. It depends on the number of vCPUs and the configured memory for the guest operating system. |
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| Consumed Memory | mem.consumed.absolute.average.kiloBytes | Amount of host memory used by the VM for its guest operating system's physical memory. Consumed memory does not include the overhead memory. It only includes shared memory and memory that might be reserved, but not used. That is, |
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| Active Memory | mem.active.absolute.average.kiloBytes | Amount of guest physical memory that is in use by the VM. Active memory is estimated using VMkernel statistical sampling. It represents the actual amount of memory the VM needs. Therefore, the unused memory can be swapped out or ballooned without any performance impact. |
Snapshot Metrics
The snapshot metric provide information about the VM snapshot.
| Metric Name | Metric API Name | Decription |
|---|---|---|
| Snapshot Size | snapshot.used.absolute.latest.bytes | The size of the VM snapshot. |
