Teradata 16.20 TASM includes a new Priority Scheduler design for SLES11.
The old Priority Scheduler is an application for Teradata Database 16.20 SLES10.
The Priority Scheduler for SLES11 is based on constructs such as Virtual Partitions, Workload Methods, Access Levels, and Tiers.
All the features that exist in TWA 13.10 will work as is for Teradata Database 16.20, 16.00, 15.10, 14.10, 14.0, SLES10 (except 16.20, 16.00, 15.10, 15.0, 14.10, and 14.0 changes other than SLES11 Priority Scheduler.
Note the following changes when TWA 16.20 is connected to Teradata Database 14.0 and higher SLES11:
- The menu item is disabled. This option is supported for Teradata Database 14.0 and higher SLES11.
- Four new default workloads exist in addition to the WD-Default workload. All four default workloads are listed in the candidate workload tree window.
- These default workloads are created for Timeshare workload method with access rates Top, High, Medium, and Low under the default Virtual Partition. The evaluation order of these workloads is shown in the following table.
| Workload Name | Workload Classification | Workload Method | Timeshare Access Level |
|---|---|---|---|
| WD-Top | Account = "$R*" | Timeshare | Top |
| WD-High | Account = "$H*" | Timeshare | High |
| WD-Medium | Account = "$M*" | Timeshare | Medium |
| WD-Low | Account = "$L*" | Timeshare | Low |
| WD-Default | <no classification> | Timeshare | Medium |
- The menu item is disabled since it is not applicable for SLES11 Priority Scheduler.
- The Workload Attributes tab view has changed. For more details, see Workload Attributes.
- A new tab has been added in the Workload Attributes view to define the Tactical Exception for Tactical Workload method.
- All Tactical Workloads have a default Tactical Exception rule pair (CPU per Node and I/O per Node) set to default thresholds and are assigned a Change Workload action of WD-Default. The DBA can use the Tactical Exception workload attribute tab to change the default setting.
- TWA 16.20 creates a default Virtual Partition named “Standard” with a quota value of 100. All the TWA recommended workloads are mapped with the default Virtual Partition. A Virtual Partition other than the default can be created by selecting .