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SQL Optimizer for SAP ASE 3.9.1 - Installation Guide

Analyze Chart Results

Charts are available for all the statistics and run times. Three chart panes display the run time information.

To change the information in the chart

Click the Chart Title and select the following functionality:

Performance Projection

A performance forecast based on the retrieved Estimated I/O Cost value. If the Performance Projection value is greater then one, then it is forecasted that the SQL alternative may give a better performance.

Estimated I/O cost

Charts the estimated I/0 cost from the SQL statement with the corresponding indexes.

All Records and First Record

Charts the following statistics for All Records or First Record after the run time is retrieved for a SQL statement using the Batch Run, Run for All Records, or Run for First Record.

Statistics Description
Elapsed Time Charts the execution time (in clock time) that it takes the SQL statement to select all records or the first record. This figure may include time that Adaptive Server spent on processing other tasks or waiting for disk or network I/O to complete.

Times of Improvement

How many times faster the alternative SQL statement is compared to the original SQL.

CPU Time

Charts the execution time (in CPU time) that it takes the SQL statement to select all records or the first record.

Actual I/O Cost

Charts the Actual I/O Cost of executing the SQL statement from Adaptive Server.

Elapsed Time + CPU Time

Charts side by side the Elapsed Time and the CPU Time.

Writes

Charts the accumulative number of disks writes for the SQL statement run time statistics.

Scan Count

Charts the accumulative number of scans for the SQL statement from the run time statistics.

Logical Read

Charts the accumulative number of logical reads for the SQL statement from the run time statistics.

Physical Read

Charts the accumulative number of physical reads for the SQL statement from the run time statistics.

Apf IOs used

Charts the accumulative number of Apf IOs for the SQL statement from the run time statistics.

Other

Charts the following statistics.

Statistics

Description

All Records Charts the Elapsed Time + CPU Time, Actual I/O Cost, and Times of Improvement for all records.

First Records

Charts the Elapsed Time + CPU Time, Actual I/O Cost, and Times of Improvement for the first record.

All Records vs. First Record

Charts the Elapsed Time for all records and the first record.

All Records vs. First Record with Cost

Charts the Estimated I/O Cost, the Elapsed Time + CPU Time (for all records), and Elapsed Time + CPU Time (for the first record).

Print

Print the chart.

Save

Save the selected chart.

Hide Chart

Hide the selected chart.

 

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