Default AWT Resource Limits | Teradata Vantage - 17.00 - Default AWT Resource Limits - Teradata Workload Management

Teradata Vantageā„¢ - Workload Management User Guide

prodname
Advanced SQL Engine
Teradata Workload Management
vrm_release
17.00
created_date
June 2020
category
Administration
User Guide
featnum
B035-1197-170K

The value of the default AWT resource limits depends on the setting of the Support increased MLOADX job limits and increased AWT resource limits option on the Other tab of the General view in the Workload Designer portlet.

If you clear the option, TASM uses the following default AWT resource limits.
Utility Type Percentage of the Total Number of AWTs per AMP Allowed for Utility Use
All load utilities as a group, in any combination (FastLoad, FastExport, MultiLoad, MLOADX) 60
DSA backup and DSA Restore 70

The AWTs per AMP are not reserved for utility use, but if they are available, utilities can use them up to the limit specified.

If you select the option, TASM uses the following AWT resource limits.
Utility Type Percentage of the Total Number of AWTs per AMP Allowed for Utility Use
All load utilities as a group, in any combination (FastLoad, FastExport, MultiLoad, MLOADX) 70
MLOADX 70
DSA backup and DSA Restore 70

For example, if the default of 80 AWTs per AMP is in effect, then by default all load utilities combined can use up to 60% of 80, or 48 AWTs per AMP. If you check the MLOADX option, load utilities as a group can use 70% of AWTs per AMP, or 56 AWTs.

In addition, when you check the MLOADX option, TASM creates a separate limit of 70% of AWTs per AMP for MLOADX jobs and enforces it independently. Both the MLOADX limit and the load utility group limit must be satisfied before an MLOADX job can run.

The following figure shows the Support increased MLOADX job limits and increased AWT resource limits option.