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NAME
Amyload - graphically monitor Amiga CPU, blitter, and memory usage
SYNOPSIS
amyload [options] [ '{' [window options] [ '[' [record options] ']' ] ... '}' ] ...
DESCRIPTION
Amyload is a program which graphically displays information about
current CPU, blitter, and memory usage of the Amiga. This
information is displayed in one or more windows, each of which may
display information about the usage of any or all of the following:
CPU usage - The average length of the ready queue over the last
n seconds (a settable time interval). When greater
than 1, horizontal lines are drawn to reflect a
change in the scale that CPU usage is being
displayed in.
Blitter usage - The fraction of time during the last interval
that the blitter was in use.
Chip memory usage - The fraction of chip memory in use.
Fast memory usage - The fraction of fast memory in use.
Both chip and fast memory usage - The combination of both above.
Options: (spaces are ignored except between an option requiring
an integer parameter, where there had better not be any)
i<n> Set the time interval between updates to n seconds.
Default is the current setting of load.device, which
begins at 5 seconds, but may have been changed.
t<n> Set the number of ticks per interval (at which samples
of CPU and blitter usage are taken) to n. Default is
the current setting of the load.device, which begins
at 61. The interval time divided by the number of
ticks should form an irregular number, so as to try
to avoid aliasing problems. (e.g. 1 second / 10 ticks
is probably a bad idea, because the device might get
'in sync' with some other task, and that would distort
the results.)
p<n> Set the priority of the measuring task to n. It should
be higher than any tasks it is trying to measure.
Default is the current setting of the load.device, which
begins at 25.
Following the options selection, window specifications may be
given. They are introduced by the '{' character, and terminated
by the '}' character.
Window Options:
=[WIDTH][xHEIGHT][{+-}XOFF[{+-}YOFF]]
(similar to an X geometry specification)
The '=' character introduces the specification. WIDTH
and HEIGHT specify the WIDTH and HEIGHT of the window.
XOFF and YOFF specify the position of the window relative
to the screen's borders, the '+' or '-' characters
indicating a position relative to the left or right border
respectively of the screen in the case of XOFF, or top or
bottom in the case of YOFF. Distances are measured between
the screen's border and the nearest window edge, so the
window can be placed in the lower right corner with
specifications of -0-0 for XOFF and YOFF. No spaces
are allowed within the geometry specification.
d<n> Set the window's detail pen color to n.
b<n> Set the window's block pen number to n.
g<n> Set the background pen number for the window to n.
After window options have been specified, one or more record
descriptions may be specified. These are introduced with the
'[' character, and terminated by the ']' character. The records
specified earlier will have their data lines drawn on top of
records specified later (first to last == foreground to
background).
Record Options:
C This record will display CPU usage (really ready queue
length). This is the default record type.
b This record will display blitter usage.
c This record will display chip memory usage.
f This record will display fast memory usage.
m This record will display all memory usage.
d<n> Data lines for this record will be drawn with pen n.
r<n> References lines (drawn when scaling) will be drawn with
pen n. This is irrelevant unless the record is
displaying CPU usage. Note that reference lines will
be drawn behind all records, regardless of ordering,
except that they will be drawn on top of the scaled
record's data lines.
Note that load.device MUST be in your DEVS: directory (or already
loaded into the system).
USER INTERFACE
Standard system gadgets are present but invisible (except for the
drag bar, see BUGS). The menu button causes the types of the
records in the windows to be printed in the color of their data
lines.
EXAMPLES
amyload
- use the default setup
amyload {[C]}
- open a single window monitoring CPU usage
amyload {=200x200-0-0[C]}
- as above, but make the window 200 by 200 and put it in the
lower right hand corner of the screen.
amyload {[bd2][Cd3]}{[cd3][fd2]}
- open one window displaying blitter usage in the foreground
using pen 2 for drawing data lines, and CPU usage in the
background using pen 3 for data lines and the default pen
for scale reference lines. Open a second window with chip
memory usage in the foreground using pen 3 for data lines,
and fast memory usage in the background using pen 2 for
data lines.
DIAGNOSTICS
Error numbers are returned, rather than a messages,
to avoid DOS. Error numbers are:
1 - "Can't open graphics library"
2 - "Can't open intuition library"
3 - "Can't create message port"
4 - "Can't create IO request"
5 - "Can't open load device"
6 - "Can't open window"
7 - "Can't create load record"
8 - "Unexpected end of record description"
9 - "Unexpected end of window description"
10 - "Bad record flag"
11 - "Bad window flag"
12 - "Bad flag"
BUGS
When the window is activated/deactivated, the not so invisible drag
bar is still drawn/masked. Can't seem to figure out how to avoid
this.
Doesn't do enough checking of options. May crash if bad ones
are given, especially zeroes in the wrong places.
Doesn't do a 3D representation, yet...
There is a bug in the data line drawing procedure (I think it's in
there, anyway) that causes scale lines to not be drawn over data lines
that are just heigher than the scale line.
Should use cback.o, so you don't have to 'run' it, but I haven't
looked into that yet.
Isn't Intuition friendly. Application gadget and menu support
should be added to allow configuration after startup.
SEE ALSO
devices/load.doc
AUTHOR
Jeff Kelley
Dept. of Computer Science
University of Waterloo
Waterloo, Ontario, Canada
N2L 3G1
Voice: (519)-578-4514
UUCP: {ihnp4,watmath}!watcgl!jvkelley
BITNET: jvkelley@cgl.waterloo.bitnet
INTERNET: jvkelley@cgl.waterloo.edu
EAN: jvkelley@cgl.waterloo.cdn
Comments, suggestions, bug reports welcome.
ACKNOWLEDGEMENTS
Amyload was inspired by the 'xload' program for UN*X workstations
running the X Window System, and, to a lesser extent, by 'pm' for
the Amiga.
Thanks to Matt Dillon for Dme, the Software Distillery for blink,
Comspec for getting a 2M RAM expansion to me quickly (NACK to the
<unnamed> company whose lies about delivery dates delayed this
project by a couple months), everyone on USENET, and the
visionaries who created the Amiga.