Glossary

address space

An executing batch job, system task, or TSO user. Same as job.

application tuning

The process of analyzing and adjusting the performance of an application with the goal of maximizing efficiency and effectiveness.

broadcast request

A monitor request that is sent to any system in a sysplex.

CEESPLD

The load library.

CodeView

Interactive analysis option 3. This panel displays the execution and wait time of each module that is used by the target program.

connect time

The number of milliseconds during a monitored period that represent the end-to-end time needed for transferring data to and from external media and memory. Connect time displays on the DataView and Data Set Details panels. Connect time might exceed the monitored period because of data overlap caused when multiple blocks of data are moved to and from memory.

contention

A situation that occurs when there are more requests for a service than there are servers available. For single servers such as drives, control units, and paths, contention occurs when two or more requests for service arrive simultaneously.

content-sensitive help

The online Help information for specific CSECTs, pseudo groups, and major and minor delay categories.

CSECT

An individually linkable component of a program, which may be included in one or more load modules.

CSECT Associations

CA Mainframe Application Tuner allows a functional description to be associated with individual CSECTs that will be shown on various analysis panels. The user can build a database of functions of CSECTs, which can substantially simplify the later understanding of the presented results.

data set fragmentation

Under z/OS, data sets are allocated in the form of extents, which represent allocation areas on the physical device. A data set might originally be allocated to occupy from one to five extents and might subsequently grow into up to 16 of these allocation groups. The more scattering that occurs, the more a data set is considered to be fragmented. Because data retrieval time increases with fragmentation, this characteristic is considered undesirable.

DataView

Interactive analysis option 5. This panel displays data sets, databases (IMS, Adabas, Natural, CA IDEAL and CA DATACOM), and DB2® statements that caused activity during the monitored period.

delays

CA Mainframe Application Tuner considers all samples that do not indicate the actual code of the target application program to be processing as some form of delay. This term should not be confused with actual waits and is only a functional indicator from the perspective of the operating system as to what operations are performed at the time of the sample. Delays can cause the task to be in a wait state, executing in RB (application program) or SVRB (operating system) mode.

DelayView

Interactive analysis option 2. This panel displays the target program’s performance in terms of the activities that made up the program execution time.

disconnect time

The time in an I/O cycle that a device is not actually transferring or searching for data.

external data set

The monitor data created by another user.

fast path

A predefined link between one screen and another. Executed by placing the cursor on a single value in a field and pressing Enter. The resulting screen displays more detailed information about the selected value.

field

(1) A column of data on a screen. (2) A group of character positions within a screen that are used to enter or display specific information.

field Help

The online information that describes the purpose or contents of a field on a panel. Displayed by placing the cursor anywhere in the field and pressing PF1 (HELP).

filter

The selection criteria established for a column of data. Data that does not meet the selection criteria is not displayed. A filter consists of a character string.

filtered analysis

When requesting CA Mainframe Application Tuner to analyze the gathered data, the user may indicate that the output data should be filtered before making it available. This process temporarily discards all data pertaining to involuntary waits, which, in most cases, are not under the control of the monitored program but quite often represent a considerable amount of data that slow down the interactive analysis. This method is preferred to the basic (unfiltered) analysis.

fixed field

The fields that are located on the far left side of a screen that you display by scrolling right with PF11 (RIGHT). The presence of fixed fields is indicated by an arrow on the left side of a screen, just below the column headers.

histogram

CA Mainframe Application Tuner uses the term histogram to refer to a process where the activity of an individual load module or CSECT is statistically broken up into segments of equal size and their activity comparably demonstrated.

Installation Verification Procedure (IVP)

A procedure that is performed after installation that determines if CA Mainframe Application Tuner is functioning properly.

interactive analysis

The analysis of data that is processed from a user’s terminal. This form of analysis is preferable because it allows selective presentation of output and reduces the amount of user data. Several report display options are provided.

invoking a monitor

The process of starting the observation and subsequent sampling of a target application as defined by the monitor definition.

involuntary wait

CA Mainframe Application Tuner considers all nondispatch states that are not directly caused by the target address to be involuntary, including such states as the address spaces being swapped out or not being dispatched due to higher priority work already being in the system.

job

A batch job, Started Task, or TSO session executing in an z/OS address space. Same as address space.

load module

Almost all code executed under z/OS is stored and fetched by the operating system in the form of load modules. Load modules comprise individual CSECTs and information about how these CSECTs are to be loaded into memory and resolved.

local request

A monitor request that is only sent to the local system of the TSO user.

module load time

The amount of time the operating system spends retrieving and resolving the instruction image of a load module stored on DASD.

ModView

Interactive analysis option 7. This panel displays the activity of each load module for the target application.

monitor administration

The management of monitor information, including monitor definitions, invocations, analysis, history, and status.

monitor data set

The partitioned data set (PDS) that contains the results of a monitoring session.

monitor definition

The specification a user provides to CA Mainframe Application Tuner as to what to monitor and in which manner. A user may maintain any number of monitor definitions at any given point in time.

monitor history

The cumulative collection of data sets for a monitor definition.

monitor request

A monitor definition that has been activated by using the Invoke line command (I) in the Monitor Definition panel.

multitasking

The simultaneous or quasi-simultaneous processing of several units of work (tasks) within the same address space. Each of these tasks operates on independent processes, which might or might not preempt each other.

Observation

The beginning of the sample process. An observation occurs at regular intervals based on monitoring criteria that is defined in the monitor profile. It represents an initial assessment of whether a sample can be taken and if it can, TriTine sampling logic is executed.

Open Application Program Interface (Open API)

The method CA Mainframe Application Tuner uses to define and invoke monitors from outside of the TSO Client (through TSO commands, batch jobs, or from within a program).

Overview

Interactive analysis option 0. This panel displays information about the monitoring process, as well as key global statistics about the monitored application.

pending time

The time between the successful completion of an SSCH and before the execution of the first channel command. Pending time and IOS queue is the total queue time (XA only).

PoolView

Interactive analysis option 8. Displays statistics about VSAM/LSR and VSAM/GSR buffer pool usage.

Primary Option Menu

The panel that displays when CA Mainframe Application Tuner is first invoked. Provides access to all basic features.

product customization

An online facility for customizing the installation of products. Product customization provides an ISPF panel interface that both presents customization steps in sequence and provides current status information about the progress of installation.

profile name

The name that is specified for a monitor definition. Identifies monitor data sets and analysis panels.

profile parameters

A set of parameters that specify default conditions for each user.

pseudo groups

A feature that enables you to assign unique identifiers to related program modules that cause CA Mainframe Application Tuner to treat them as a single group during a monitor session. Modules are associated with pseudo groups by using Option 4, Grouping, on the Primary Option Menu.

registration

The process of providing CA Mainframe Application Tuner with the location of compiled program listings. Used to relate program activity to actual high-level language statements during analysis.

samples

The collective information gathered by all snapshots during one recording interval. This information consists of snapshots for all active and monitored TCBs in the target address space.

screen

A collection of rows and columns of data that displays through the online facility.

screen Help

The online information panels that describe the purpose of a screen. Display screen Help by placing the cursor anywhere on the screen, except on a field, and pressing PF1 (HELP).

snapshot

The capture of the state of one task in the target address space with any related information. This state includes, but is not limited to, the PSW, the wait state bit, the module active at the time, and some of the information pointed to by the current and stored registers.

status

(1) The percentage of completion of a monitor request. (2) The status (Active, Inactive, Waiting) of a monitor request in the Server Space.

target request

A monitor request that is sent to a specified system (or systems) in a sysplex.

tasklib

A DD statement other than STEPLIB or JOBLIB from which a program explicitly initiates the fetch of load modules. The name of the DD statement is at the discretion of the program and varies widely. Examples are DFHRPL for CICS and ISPLLIB for ISPF.

TaskView

Interactive analysis option 1. This panel displays information about the performance of each z/OS task in the monitored address space.

TimeView

Interactive analysis option 4. This panel displays program activity in time sequence. Each row of information represents a single sample taken during the monitored period.

TNISPF1

The REXX EXEC that is used to invoke the ISPF interface.

TNTUNESS

The procedure for starting the Server Space.

TranView

Interactive analysis option 6.This panel shows IMS or CICS activity in terms of individual transactions.

TRSAMP

The data set that contains sample members that are used for the installation and operation of CA Mainframe Application Tuner.

TSO Client

See CA Mainframe Application Tuner TSO Client.

TUNAVSAM

The procedure that is used to create the Global Tables data set.

TUNBATCH

The procedure that is used by CA Mainframe Application Tuner for generating batch reports.

TUNCALL

The program that is used to invoke monitors from outside of the TSO Client.

TUNCOB01

The COBOL program provided with CA Mainframe Application Tuner that is used to verify operation and generate sample monitor data.

TUNSDEFS

UTRPARM member that is used to define system default parameters.

TUNSSP00

UTRPARM member that is used to define operational parameters and for password authorization.

TUNUDEFS

UTRPARM member that is used to define user default parameters.

UTRHELP

The data set that contains online Help and content-sensitive help information.

UTRPARM

A data set that is created during product customization into which samples are copied from the CEESSAMP data set. Users can then modify their own copies without corrupting the original models.

VOLSER

The volume serial number.

volume

A named collection of data sets dealt with as an entity by the I/O supervisor. For tape subsystems, it is a cartridge. For DASD, it is a drive, a logical drive (dual-density), or an actuator (3390 class).