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This session covers the main topics of Workload Management on SLES 11 systems. 

Think about the priority part of workload management for a minute.

The settings that the administrator makes when defining priorities for different workloads are on the surface--things like workload allocation percentages and access level assignments.  They are easy to see.  Below the surface are “global weights”, which starting in Teradata Database 14.10 indicate to you the actual percentage of platform resources your workload will receive, based on its allocation.

But they do more than translate your settings to an expected resource share.  Global weights are used by the database to order the queues for several internal entities.  For example, the AMP worker task (AWT) message queue is now ordered by global weight in SLES 11. 

So it’s time you spent a few minutes taking a closer look at what global weights are, how the SLES 11 priority scheduler calculates them, and how you can influence them.

Workload Management is a critical component of balancing application demands and ensuring consistent application performance ...

A new database priority scheduler is introduced with the Linux SLES 11 operating system. This changes how workload priorities are managed within Teradata Active System Management (TASM).

The SLES 11 priority scheduler implements priorities and assigns resources to workloads based on a tree structure.   The priority administrator defines workloads in Viewpoint Workload Designer and places the workloads on one of several different available levels in this hierarchy. On some levels the admin assigns an allocation percent to the workloads, on other levels not.

How does the administrator influence who gets what?  How does tier level and the presence of other workloads are on the same tier impact what resources are actually allocated?  What happens when some workloads are idle and others are not?

This posting gives you a simple explanation of how resources are shared in SLES 11 priority scheduler and what happens when one or more workloads are unable to consume what they have been allocated.

Workload Management is a critical component of balancing application demands and ensuring consistent application performance.

Workload Designer has been updated to make it easier to understand and configure how resources are assigned to workloads. TASM 14.0 onwards SLES 11 uses a new method of workload resource allocation that is intended to simplify the process conceptually and procedurally. This post describes the new workload resource allocation user interfaces and how they can be used to perform some basic resource allocation.

 

Teradata Active System Management (TASM) is a powerful tool available to you that gives you unprecedented control over your Teradata system. Teradata 14.0 SLES 11 introduces Teradata Integrated Workload Management (TIWM), which, for the first time, provides workload management capabilities to customers without full TASM licensing.