16.20 - Enhanced Hard Limit Enforcement for Workloads - Teradata Vantage NewSQL Engine

Teradata Vantageā„¢ NewSQL Engine Release Summary

prodname
Teradata Database
Teradata Vantage NewSQL Engine
vrm_release
16.20
created_date
March 2019
category
Release Notes
featnum
B035-1098-162K

Enforcement of CPU and I/O resource hard limits is now under the control of Vantage workload management, rather than being managed by the Linux operating system.

Benefits

  • Better oversight over task suspension (hold-back) when a hard limits are met.
  • More precise task control for workloads using hard limits. Such tasks will no longer be universally suspended to enforce a limit. Instead, each task is considered independently.
  • Reduces restrictions on the use of hard limits for workload management.

Considerations

Most workload tasks under hard-limit control are still suspended to enforce hard limits, but tasks holding critical shared resources, such as internal locks, are now allowed to continue to run until they release the resource.

Additional Information

For more information about Vantage workload management, see Teradata Vantageā„¢ Workload Management User Guide, B035-1197.