CPU Disk Ratio | Teradata Vantage - 17.00 - CPU Disk Ratio - 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 CPU Disk Ratio exception detects requests that have an unusually high ratio of CPU use versus logical I/Os. One example of this is an accidental unconstrained product join on a very large table. This metric is also called the product join indicator (PJI). Other legitimate requests, such as full table scans, can also be CPU-intensive, however.