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README for xsysinfo version 1.6.
WHAT IS XSYSINFO:
Xsysinfo is an X application to display some Linux kernel parameters in
graphical form. It is like a mix of top, free and xload with the difference
that the values are shown in form of a horizontal bar. The displayed values
are: CPU load average, CPU load, memory and swap sizes (details see below).
Xsysinfo 1.6 runs at least under Linux 0.99pl5 with the proc filesystem (as
kernels from this release on support the CPU idle time, no patch is
necessary like in earlier versions of xsysinfo). Starting with version 1.3,
xsysinfo also supports the new /proc/meminfo-format used in kernels >= 1.3.x
FOR THE IMPATIENT:
If you want to take a look at xsysinfo, before you decide to install it,
make sure the proc fs is mounted at /proc, then just type:
XAPPLRESDIR=. xsysinfo &
HOW TO INSTALL:
There is a compiled ELF-version of xsysinfo included in the archive, which
was built under RedHat 4.2 with XFree86 3.3.1 and libc 5.3.12. If you want
to install this binary just type
make install
as root. xsysinfo runs under normal (755) permissions, so you don't have to
make it setuid/setgid.
NOTE: Use this way to install xsysinfo! `make install' not only copies the
binary to the right place, it also installs the system wide application
defaults file (XSysinfo). Without this file you'll get a running xsysinfo,
but it won't look very nice...
If you want to create your own compiled version just type:
xmkmf
make clean
make
(you'll need the programming package and the libraries from the XFree
distribution to do this.)
Now you can install it as described above.
Xsysinfo requires that the proc filesystem is compiled into the kernel
(this is the default anyway) and that it is mounted on directory /proc.
To check this just do an `ls' on /proc, which should give something like
this:
$ ls /proc
1/ 21/ 27/ 39/ 42/ 52/ kmsg uptime
14/ 22/ 28/ 4/ 44/ 75/ loadavg
15/ 23/ 29/ 40/ 46/ 87/ meminfo
20/ 24/ 38/ 41/ 47/ self/ version
To mount the proc filesystem, add the following line to your /etc/fstab:
none /proc proc defaults # proc fs
WHAT IS DISPLAYED:
Xsysinfo displays the following values:
- CPU load average
CPU load average between 0.000-8.000. The gauge's bar is subdivided
into segments, where one segment represents a load value of 1.0. The
bar's full length is automatically scaled, depending on the displayed
value:
load value (l) full length # segments
------------------------------------------------------
0.00 <= l < 1.00 1.00 1
1.00 <= l < 2.00 2.00 2
2.00 <= l < 3.00 3.00 3
... and so on ...
- CPU load
percentage CPU load time to CPU idle time subdivided in three segments:
user load, system load and nice load.
- Memory
The memory gauge's bar is subdivided into two segments with following
values (from left to right):
o amount of physical memory, which is used by processes
o physical memory used for the page and buffer cache
The length of the whole bar, which is the sum of these two values,
shows the amount of physical memory currently used by the system.
- Swap
The percentage of swap space used by the system to total amount of
swap space.
COMMAND LINE OPTIONS:
Xsysinfo accepts the following command line options:
-update <n> set update rate to <n> milli-seconds
-title (-notitle) show (don't show) title string
-labels (-nolabels) show (don't show) gauge labels
-loadavg (-noloadavg) show (don't show) CPU load average value
-load (-noload) show (don't show) CPU load value
-mem (-nomem) show (don't show) Memory info
-swap (-noswap) show (don't show) Swap info
-help show this message
You can also specify any of the standard toolkit options (see: manpage X(1)).
CONFIGURATION:
As the most X programs, xsysinfo is highly configurable. There are two
resource files: XSysinfo with color independent settings and XSysinfo-color
with color resources. The latter is automatically loaded, if your server
is set up to use color customized resource files. To do this just add
*customization: -color
in your server resource file loaded by xrdb at startup (usually
/usr/X11R6/lib/X11/xinit/.Xresources).
ACKNOWLEDGMENTS:
Thanks to Linus and the other kernel hackers, who made Linux to this great
OS. Also thanks to Muhammad M. Saggaf for his suggestions and ideas for this
xsysinfo release. And last but not least thanks to Lucas Bussmann and
Joerg Fries for creating the color resources.
COMMENTS:
Xsyinfo is written by Gabor Herr (herr@iti.informatik.th-darmstadt.de) and
currently maintained by Ronald Wahl (ronald.wahl@informatik.tu-chemnitz.de).
Comments, bug reports, whishes etc... are welcome.
Have fun watching the kernel...
Gabor & Ronald
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