Output
Running OpenDC results in three output files. The first file (Task) contains metrics related to the jobs being executed. The second file (Host) contains all metrics related to the hosts on which jobs can be executed. The third file (Power) contains all metrics related to the power sources that power the hosts. Finally, the third file (Service) contains metrics describing the overall performance. An experiment in OpenDC has
Task
The task output file, contains all metrics of related to the tasks that are being executed.
| Metric | Datatype | Unit | Summary |
|---|---|---|---|
| timestamp | int64 | ms | Timestamp of the sample since the start of the workload |
| absolute timestamp | int64 | ms | The absolute timestamp based on the given workload |
| server_id | binary | string | The id of the server determined during runtime |
| server_name | binary | string | The name of the server provided by the Trace |
| host_id | binary | string | The id of the host on which the server is hosted or null if it has no host. |
| mem_capacity | int64 | Mb | |
| cpu_count | int32 | count | |
| cpu_limit | double | MHz | The capacity of the CPUs of Host on which the server is running. |
| cpu_time_active | int64 | ms | The duration that a CPU was active in the server. |
| cpu_time_idle | int64 | ms | The duration that a CPU was idle in the server. |
| cpu_time_steal | int64 | ms | The duration that a vCPU wanted to run, but no capacity was available. |
| cpu_time_lost | int64 | ms | The duration of CPU time that was lost due to interference. |
| uptime | int64 | ms | The uptime of the host since last sample. |
| downtime | int64 | ms | The downtime of the host since last sample. |
| provision_time | int64 | ms | The time for which the server was enqueued for the scheduler. |
| boot_time | int64 | ms | The time a task got booted. |
| boot_time_absolute | int64 | ms | The absolute time a task got booted. |
| creation_time | int64 | ms | The time at which the task was created by the ComputeService |
| finish_time | int64 | ms | The time at which the task was finished (either completed or terminated) |
| task_state | String | TaskState | The status of the Task |
Host
The host output file, contains all metrics of related to the host run.
| Metric | DataType | Unit | Summary |
|---|---|---|---|
| timestamp | int64 | ms | Timestamp of the sample |
| absolute timestamp | int64 | ms | The absolute timestamp based on the given workload |
| host_id | binary | string | The id of the host given by OpenDC |
| cpu_count | int32 | count | The number of available cpuModel cores |
| mem_capacity | int64 | Mb | The amount of available memory |
| guests_terminated | int32 | count | The number of guests that are in a terminated state. |
| guests_running | int32 | count | The number of guests that are in a running state. |
| guests_error | int32 | count | The number of guests that are in an error state. |
| guests_invalid | int32 | count | The number of guests that are in an unknown state. |
| cpu_limit | double | MHz | The capacity of the CPUs in the host. |
| cpu_usage | double | MHz | The usage of all CPUs in the host. |
| cpu_demand | double | MHz | The demand of all vCPUs of the guests |
| cpu_utilization | double | ratio | The CPU utilization of the host. This is calculated by dividing the cpu_usage, by the cpu_limit |
| cpu_time_active | int64 | ms | The duration that a CPU was active in the host. |
| cpu_time_idle | int64 | ms | The duration that a CPU was idle in the host. |
| cpu_time_steal | int64 | ms | The duration that a vCPU wanted to run, but no capacity was available. |
| cpu_time_lost | int64 | ms | The duration of CPU time that was lost due to interference. |
| power_draw | double | Watt | The current power draw of the host. |
| energy_usage | double | Joule (Ws) | The total energy consumption of the host since last sample. |
| uptime | int64 | ms | The uptime of the host since last sample. |
| downtime | int64 | ms | The downtime of the host since last sample. |
| boot_time | int64 | ms | The time a host got booted. |
| boot_time_absolute | int64 | ms | The absolute time a host got booted. |
Power Source
The host output file, contains all metrics of related to the host run.
| Metric | DataType | Unit | Summary |
|---|---|---|---|
| timestamp | int64 | ms | Timestamp of the sample |
| absolute timestamp | int64 | ms | The absolute timestamp based on the given workload |
| hosts_connected | int | Count | The number of hosts connected to the power Source (WARNING: does not work at the moment) |
| power_draw | double | Watt | The current power draw of the host. |
| energy_usage | double | Joule (Ws) | The total energy consumption of the host since last sample. |
| carbon_intensity | double | gCO2/kW | The amount of carbon that is emitted when using a unit of energy |
| carbon_emission | double | gram | The amount of carbon emitted since the previous sample |
Service
The service output file, contains metrics providing an overview of the performance.
| Metric | DataType | Unit | Summary |
|---|---|---|---|
| timestamp | int64 | ms | Timestamp of the sample |
| absolute timestamp | int64 | ms | The absolute timestamp based on the given workload |
| hosts_up | int32 | count | The number of hosts that are up at this instant. |
| hosts_down | int32 | count | The number of hosts that are down at this instant. |
| tasks_total | int32 | count | The number of servers that are currently active. |
| tasks_pending | int32 | count | The number of servers that are pending to be scheduled. |
| tasks_active | int32 | count | The number of servers that are currently active. |
| tasks_terminated | int32 | count | The number of servers that are currently active. |
| tasks_completed | int32 | count | The number of servers that are currently active. |
| attempts_success | int32 | count | The scheduling attempts that were successful. |
| attempts_failure | int32 | count | The scheduling attempts that were unsuccessful due to client error. |