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2.00 (October 28, 1996)
Petri Nordlund (email@example.com)
Executive brings real multitasking to AmigaOS. Executive is a
UNIX-like process scheduler for Amiga. It also has plenty of
other features previously available only in larger operating
Executive improves the responsiveness of your Amiga. One CPU
intensive application no longer causes the whole system to crawl.
You can start many CPU intensive applications and the system
still feels as if it would be totally idle.
The Executive package also includes many useful client programs
that let you control tasks and monitor what is going on in your
The core of Executive is a scheduler that recalculates task
priorities based on system load average and task's recent CPU
usage. The scheduler will give high priority to interactive
tasks and low priority to CPU intensive tasks.
Lets say you are printing a document from a word processor. You
can't do much else while the document is being printed. This
isn't multitasking. With Executive you could also do some heavy
rendering and C-compiling in the background at the same time.
You could surf the web with your favorite browser without even
noticing all these programs running in the background.
Executive consists of a server and clients. The server is run
in the background and it takes care of scheduling, CPU usage
calculations and many other things. Some important features of
- precise (1/1000 seconds) CPU usage timing
- six different scheduling algorithms
- load averages
- process identifiers
- process group identifiers
- focus - task with active window gets more CPU time
- MultiUser support
The client programs are:
Acct Accounting daemon
ALoad Display load average or CPU usage
ALoad3D Display load averages in 3D
Commander General task manager
Ctp Extended ChangeTaskPri
Dashboard The mother of all meters
Kill Extended Break
Lastcomm List last commands executed
Meter Display system information
Nice Run programs with lower scheduling priority
Ps Process status displayer
Pstree Display child-parent relationships
Renice Renice a task
Sa Display accounting statistics
Stat Display some misc. information
Timer Time shell and Workbench programs
Top Display information about top CPU tasks
Uptime Display system uptime and load averages
Executive is fully compatible with all Amiga computers running
AmigaOS release 2.04 or newer.
Executive is the highest rated item of shareware CU Amiga
magazine has ever awarded at 98%.
- Schedulers have been improved and a real multi-level feedback
queue scheduler, found on most UNIX systems, is now available.
- New client, Dashboard, lets you open multiple windows and
interactively create all kinds of meters on them and adjust
their parameters. Everything is user configurable.
- PatchControl and ScreenNotify support.
- CPU usage can be displayed with Amiga's power LED.
- The server and some clients are now commodities. Scheduling
can be disabled and enabled without restarting the server.
- ExecutiveAPI is a new low-level API for application programs
that wish to directly control scheduling.
- Tasks can now be scheduled as a group, if necessary.
AmigaOS 2.04 or newer is required to run Executive.
Any Aminet site, for example:
Executive has a WWW-page which has links to several Aminet
sites and also some nice screenshots. The URL of the page is:
The freely redistributable version doesn't lack any crucial
features so it can be used without registering. Registered
users get process accounting, ALoad3D and Meter clients and
5 additional scheduling algorithms. Registration fee is $15
and it's also accepted in many other currencies.
Copyright © 1995-96 Petri Nordlund, freely redistributable.