The Regions tab denotes an infrastructure segregation that is used for separating geographic areas. It lets you view capacity and decision support metrics at the region level in OpenStack views.
You can access the Regions tab in one of the following ways:
- Select Views > All Views > Cloud > OpenStack > Availability Zones.
- In the OpenStack > Cloud details page, click the Regions link under the Configuration Data table.
Regions table: Description of columns
Regions tab: Summary table
| Metric Label | Description | Statistical Type | Metrics |
|---|---|---|---|
| Name | Name of the Region. Clicking on one of the regions in this column of the summary view takes you to the region detail view. | Last value | NAME |
| CPU Capacity [GHz] | Total CPU capacity of the hypervisors in the Region. | Last value | CPU_TOTAL_MHZ |
| CPU Used [GHZ] | Total CPU usage of the hypervisors in the region expressed in Mhz | 95th percentile | CPU_UTILMHZ |
| CPU Utilization [%] | Total CPU utilization of the hypervisors in the Region. | 95th percentile | CPU_UTIL |
| Memory Capacity [GB] | Total Memory Capacity of the hypervisors in the Region. | Last value | TOTAL_REAL_MEM |
| CPU Trend [%] | The daily growth rate of CPU utilization of the region. | Trend | Trend based on CPU_UTIL |
| Memory Capacity [GB] | Total real memory available in the hypervisors in the region. | Last value | TOTAL_REAL_MEM |
| Memory Used [GB] | Total Memory usage of the hypervisors in the region. | 95th percentile | MEM_CONSUMED |
| Memory Util [%] | Total Memory Utilization of the hypervisors in the Region. | 95th percentile | MEM_UTIL |
| Memory Trend [%] | Daily growth rate of memory utilization of the region | Trend | Trend based on MEM_UTIL |
| Ephemeral Storage Size [GB] | Total capacity of ephemeral storage, measure in gigabytes. | Last value | TOTAL_EPHEMERAL_DISK_SIZE |
| Ephemeral Provisioned Storage [GB] | Total ephemeral storage provisioned to the VMs in OpenStack measured in gigabytes | 95th percentile | TOTAL_EPHEMERAL_DISK_PROVISIONED |
| Datastore Capacity [GB] | Total Datastore capacity of the storage attached to the hypervisors in the Region. | Last value | TOTAL_DSTORE_SIZE |
| Datastore Utilization [%] | Total Datastore utilization of the storage attached to the hypervisors in the Region. | 95th percentile | TOTAL_DSTORE_UTIL |
| Datastore Trend [%] | Daily growth rate of datastore utilization of the region. | Trend | Trend based on DSTORE_UTIL |
| CPU Overcommit Ratio | Ratio of number of vCPUs of powered on VMs to that of the CPU cores available in the hypervisors in the Region. | Computed based on last values | VCPU_ON_NUM, CPU_NUM |
| Memory Overcommit Ratio | Ratio of memory configured for VMs to that of the total real memory available in the hypervisors in the Region. | Computed based on last values | SUM (VM.TOTAL_REAL_MEM), TOTAL_REAL_MEM |
| Ephemeral Storage Overcommit Ratio | Ratio of ephemeral storage provisioned to the total capacity of ephemeral storage. | Computed metric | TOTAL_EPHEMERAL_DISK_SIZE, TOTAL_EPHEMERAL_DISK_PROVISIONED |
| Hypervisor Count | Total number of hosts in the hypervisors in the region. | Last value | HOST_NUM |
| Powered On VMs | Total number of powered On VMs in the hypervisors in the Region | 95th percentile | GM_ON_NUM |
| Spare VMs | Estimated number of additional VMs that can be placed in the Region, calculated based on the remaining CPU, Memory and Storage capacity. | Computed by AFS using total capacity and 95th utilization of CPU, Memory and Storage | IND_SPARE_VM |
| Spare VM Basis | Specifies the basis for calculating the number of additional VMs that can be placed in the Region: TYPICAL or CUSTOM. For more information, see Spare VM calculation in !in Recalculating the spare VM basis. | NA | TYPICAL or CUSTOM |
| Days to Saturation | The projected amount of time before one of the resources (CPU, MEMORY, STORAGE) in the Region runs out of available capacity. Number of days to saturation for the least available resource is reported here. | Computed by AFS using total capacity and 95th utilization of CPU, Memory and Storage | IND_DAYS_TO_SATURATION |
| Bottleneck Resource | Name of the resource that has either saturated or will saturate in the next 30 days. Bottleneck resource can be CPU, MEMORY or STORAGE. The field is blank if none of the resources has saturated, or will saturate. | Computed by AFS using total capacity and 95th utilization of CPU, Memory and Storage | IND_BNECK_RESOURCE |
For more information on the Days to Saturation and other indicator parameters used for metric computations in this view, see Indicators.
Viewing detailed information about a region
After you select a region from the Name column, the Regions tab is refreshed and displays a number of portlets such as analysis charts, contained elements, and utilization tables that display detailed resource and utilization information. To use a different region, click the 
icon and select from the list.
The following table describes each of these portlets in detail.
OpenStack view: Region portlets
Portlet name | Portlet type | Description |
|---|---|---|
Cloud information | Information | Displays information such as region name, type, description and associated tags. The region name contains "Region_" as prefix and the OpenStack identity endpoint (host name, IP address) as suffix. The type is Region - OpenStack. You can add tags to the cloud by clicking the |
Configuration data | Table | Displays configuration information for region resources such as name of the region, number of CPU cores, CPU total clock frequency, datastore size, available physical memory and number of hosts, along with their associated values. |
Capacity Summary | Table | Displays utilization and other information such as vCPU parameters, CPU Overcommit Ratio, and saturation details for the region. For more information, see Viewing OpenStack capacity summary for a region. |
CPU cores, vCPUs, Overcommit Ratio | Analysis chart | Displays the number of CPU cores, vCPUs, and CPU Overcommit Ratio in a region on an hourly basis. |
CPU Utilization | Analysis chart | Displays physical core CPU utilization (in MHz) and the total clock frequency of the cloud and its resources, on an hourly basis. Click |
Memory Utilization | Analysis chart | Displays consumed memory versus real memory utilization (in GB) of the cloud and its resources. Click |
Datastore Utilization | Analysis chart | Displays total datastore space utilized versus total datastores size of the cloud and its resources. Click |
Availability Zones | Link | Displays information for all availability zones for the selected region. For more information, see Availability Zones. |
| Host Aggregates | Link | Displays information for all host aggregates for the selected region. For more information, see Host Aggregates. |
| Hypervisors | Link | Displays information for all hypervisors in the selected region. For more information, see Hypervisors. |
Sample screen
Viewing OpenStack capacity summary for a region
The Capacity Summary table contains CPU usage, Memory and Storage metrics. It also contains other metrics that are helpful in answering key capacity questions. Each row in the Capacity Summary table corresponds to a metric summary value for the selected region and shows the following information.
Regions tab: Capacity Summary table
Metric | Description | Statistical Type | Metrics |
|---|---|---|---|
CPU Utilization % | Percentage of total CPU utilized by the resources in the selected region. | 95th percentile | CPU_UTIL |
Mem Utilization % | Percentage of total physical memory utilized by the resources in the selected region. | 95th percentile | MEM_UTIL |
Datastore Utilization % | Percentage of total datastore capacity used by the resources (maximum value) in the selected region. | 95th percentile | TOTAL_DSTORE_UTIL |
| CPU Overcommit Ratio | Ratio calculated by total of virtual CPU cores (#vCPU ON) per physical core (CPU Cores). | Computed based on last values | VCPU_ON_NUM, CPU_NUM |
vCPU Residual Capacity | Number of additional vCPUs that can be added to the resource, based on the residual CPU capacity. | Computed based on last values | IND_VCPU_SIZE, VCPU_ON_NUM |
| Powered On VMs | Total number of powered on virtual CPU cores. | 95th percentile | GM_ON_NUM |
| Spare VMs | Number of spare virtual machines available on the capacity container. For more information, see Spare VM calculation. | Computed by AFS using total capacity and 95th utilization of CPU, Memory and Storage | IND_SPARE_VM |
Bottleneck Resource | The resource or resources predicted to cause performance bottlenecks. | Computed by AFS using total capacity and 95th utilization of CPU, Memory and Storage | IND_BNECK_RESOURCE |
Days to Saturation | The projected amount of time before the resource runs out of available capacity. | Computed by AFS using total capacity and 95th utilization of CPU, Memory and Storage | IND_DAYS_TO_SATURATION |
For more information on the Days to Saturation and other indicator parameters used for metric computations in this view, see Indicators.
Right under the Capacity Summary table, there is a Thresholds link. If you click this link, you are redirected to the Thresholds page for the selected region. For more information, see Adding and viewing thresholds. To go back to the Regions tab, click the Back to OpenStack Region View button located at the top-right corner of the Thresholds page.
Using data filter and other controls in tables
You can export and filter the information that is displayed in tables to suit your need. For instance, you can show or hide columns, filter tables on particular domains, and so on.
For more information, see Exporting and filtering tables.
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