3.0 The CodeBuilder Control Panel

3.1 Scheduling Priority Slide Bar
3.2 Configuration Screens
3.2.1 General Configuration Screen Host Name Time Zone
3.2.2 Memory Configuration Maximum Number Parameters

3.0 The CodeBuilder Control Panel

The CodeBuilder Control Panel is used to configure certain parameters in your CodeBuilder system. It is normally opened once prior to launching CodeBuilder for the first time, and subsequently if you want to change any CodeBuilder operating parameters.

To view the CodeBuilder Control Panel, choose "Control Panels" from the Apple menu and double-click on "CodeBuilder Controls". The Control Panel consists of the Scheduling Priority slide bar and three configuration buttons. With the exception of Scheduling Priority slide bar adjustments, all changes made in the CodeBuilder Control Panel require you to restart CodeBuilder in order for the modifications to take effect.

Figure 7: CodeBuilder Control Panel

3.1 Scheduling Priority Slide Bar

On a busy system where both CodeBuilder and Macintosh programs are running simultaneously, the Scheduling Priority slide bar allows you to control the relative CPU time spent running UNIX programs versus running Macintosh programs. A change of priority goes into effect immediately, allowing you to tune your system depending on your personal workload priority. For optimal performance, the CodeBuilder Control Panel should be closed after making any scheduling priority adjustments.

The CodeBuilder scheduler is designed to optimize performance independent of the slide bar position. Therefore, when no other Macintosh applications are running, the slide bar position will have no effect on the performance of CodeBuilder. Similarly, when no CodeBuilder processes are active, the impact of CodeBuilder on Macintosh applications will be minimal, regardless of the slide bar setting.

3.2 Configuration Screens

There are some basic configuration parameters that must be set in order for CodeBuilder to operate properly. These include general CodeBuilder system information and settings that affect CodeBuilder memory utilization.

The configuration screens are activated by clicking on the appropriate button in the control panel. Each screen contains editable text fields and check boxes for specifying configuration values. The "Default" button in each configuration screen will reset the entries in the screen to installation default values. After entering your configuration values, click on the "Save" button to confirm your entry, or on the "Cancel" button to leave the values unchanged. Changed values will take effect the next time you start up CodeBuilder.

3.2.1 General Configuration Screen

Figure 8: "General Configuration" Screen Host Name

This is the name given to your Macintosh. The default host name is CodeBuilder. Under CodeBuilder, blanks and special characters other than periods and underscores are not allowed in a host name. Special characters found in the default host name are converted to underscores. Time Zone

This is a pop-up menu for choosing the appropriate time zone for your system. Many UNIX systems set the system clock to Greenwich Mean Time (GMT) and automatically compensate for Daylight Savings Time. In order to integrate with time as seen on the Macintosh, CodeBuilder uses the time as set in the Macintosh General Control Panel, typically local time. The time zone information helps CodeBuilder convert between local time and GMT. Users are responsible for adjusting the General Control Panel clock by hand when changing to and from Daylight Savings Time.

If available, the default time zone is extracted from the setting in the Macintosh World Map Control Panel.

3.2.2 Memory Configuration Screen

CodeBuilder uses maximum parameter values in this screen to dynamically allocate UNIX kernel memory resources at boot time. As your system requirements grow, these values can be adjusted upward accordingly.

Figure 9: "Memory Configuration" Screen Maximum Number Parameters

UNIX kernel parameters are presented as maximum allowable values:
UNIX processes. This is the maximum number of processes (shells, programs, daemons, etc.) that can be run at one time. The default value of processes should be adequate.

Open files. This entry specifies the number of files CodeBuilder can have open and in memory at once. The default number of open files is 124.

FS buffers. This entry is the number of 8 kilobyte UNIX File System (FS) buffers available for buffering file transfer to and from the local disk. Increasing this number from the default 16 buffers will speed up your system at the expense of memory usage.

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