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- Changes made on Dec. 19, 1993, so Monitor.app runs on 3.x (Intel machines
- and Motorola):
-
- 1. Ran 'make depend' from PB to clean up Makefile.dependencies.
- 2. Fixed import location to mach/vm_statistics.h in Monitor.h.
- Fixed import location to defaults/defaults.h in Monitor.m.
- 3. Commented out #define KERNEL in Monitor.h to avoid re-defining
- struct tm in time.h.
- 4. Changed NXImageBitmap() to NSDrawBitmap() in Monitor.m, fixing its
- arguments as well. Pure guesses as to values of miniBpp (bits per
- pixel), miniBpr (bytes per row), and miniColorSpace is used
- uninitialized. (That gives a compiler warning.)
- 5. Initialized variables and parenthesized in StripChart.m to avoid
- compiler warnings.
-
- Things I didn't do in this update:
-
- 1. Replace the obsolescent NSDrawBitmap() with methods from the
- NXBitmapImageRep class.
- 2. Colorize the App.
- 3. Move the .nib file into an .lproj directory.
-
- Remember to set Monitor.app/Monitor's group to kmem (use chgrp) and do
- a "chmod g+s Monitor" after you install it.
-
- Dick Silbar
- WhistleSoft, Inc.
- (505)-662-7309
- silbar@cantina.lanl.gov
-
- ==========================================================================
-
-
- ORIGINAL README: Roy Mongiovi, Georgia Tech
-
- This is Monitor, a program which takes the place of the Sun's perfmon and
- perfmeter for the NeXT under version 1.0 of the operating system.
-
- Monitor can display up to 30 different statistics and combinations of
- statistics in a window, plus one statistic in the icon.
-
- I wrote this without access to the source code, so it's possible that my
- guesses are incorrect about the meaning/interpretation of some of the
- values being displayed. If anyone who know more about this than I do sees
- something wrong, please let me know. If anyone knows of a statistic that
- is not being reported, please let me know.
-
- I started by using "nm" to obtain a list of all non-text type symbols from
- /sdmach. I then searched /usr/include for all occurrences of any of these
- variable names. I edited this list down to the entries that I felt were
- really definitions/references to the variables from /sdmach. This list is
- in the file "namelist".
-
- Then I wrote the program "sample.c" to read and display the current values
- of variables that I felt contained statistics. I found that many of the
- standard Unix statistics are not maintained by Mach, or are not updated in
- the same fashion as Unix. A bit of experimentation with this progrom led
- me to the list of statistics that I incorporated into Monitor.
-
- What statistics have been selected for display, what is currently on screen,
- the size and position of the window, etc. are all saved in the defaults
- database with the owner "Monitor." What statistics have been selected is
- stored as a concatenated string of the titles of the statistics. This string
- tends to get kind of long, and demonstrates a bug in the dread command.
- "dread -l" will memory fault when it tries to display the Monitor defaults.
- The file "defaults" is a list of commands that you can "source" with csh
- to display the current default settings.
-
- When scrolling the statistics, Monitor construct a DPS user path in order
- to get some speed out of the display update, but it can still be kind of
- slow. To help alleviate this, the statistics window can be closed. When
- closed, it continues to accumulate information but does not write it to the
- offscreen window. When you click the "Show" button to bring the window back
- onscreen it redisplays the entire window and the accumulated values show up.
- The icon, of course, always displays the statistic it has been selected for
- (of course, since it's normally a much smaller window this takes much less
- time).
-
- I've found it very interesting to watch how different applications use up
- the machine. Hopefully with this application people (both NeXT and third-
- party vendors) can do a better job of optimizing the impact their programs
- have on the system.
-
- P.S. Remember to set its group to kmem and do a "chmod g+s Monitor" after
- you install it.
- --
- Roy J. Mongiovi Systems Support Specialist Office of Computing Services
- Georgia Institute of Technology Atlanta, Georgia 30332-0275 (404) 894-4660
- uucp: ...!{allegra,amd,hplabs,ut-ngp}!gatech!prism!roy
- ARPA: roy@prism.gatech.edu
-