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Note: collectd plugins df and disk can help here.
Disk Utilization
Name | Collection location | Parameters | Scope of coverage | Unit(s) of measure | Definition | Method of Measurement | Sources of Error | Comments |
|---|---|---|---|---|---|---|---|---|
| Latency (read and write) | host | host name, storage resource name, data retaining policy (persistent or ephemeral), type (block, object, file), size in GB | specified storage resource | milliseconds | The average amount of time to perform a R/W operation, in milliseconds | Comparison of counter readings over the observation interval | simultaneity of readings | Need update of TST008 |
| IOPS (read and write) | host | host name, storage resource name, data retaining policy (persistent or ephemeral), type (block, object, file), size in GB | specified storage resource | operations per second | The average rate of performing R/W in IO operations per second | Comparison of counter readings over the observation interval | simultaneity of readings | Need update of TST008 |
| Throughput (read and write) | host | host name, storage resource name, data retaining policy (persistent or ephemeral), type (block, object, file), size in GB | specified storage resource | bytes per second | The average rate of performing R/W operations in Bytes per second | Comparison of counter readings over the observation interval | simultaneity of readings | Need update of TST008 |
| Disk Utilization | host | host name, storage resource name, data retaining policy (persistent or ephemeral), type (block, object, file), size in GB | specified storage resource | bytes | The amount of free, used, and reserved disk space at the time of the reading, in bytes (reported individually). | readings in all three categories | simultaneity of readings, disk space usage can be very dynamic. | Need update of TST008 |
The host CPUs, individually or total usage summed across all CPUs