PROCINFO(8) Linux System Manual PROCINFO(8)
procinfo - display system status gathered from /proc
procinfo [ -fsmadiDSbrChv ] [ -nN ] [ -Ffile ]
procinfo gathers some system data from the /proc directory and prints it nicely formatted
on the standard output device.
The meanings of the fields are as follows:
See the man page for free(1) (preferably the proc-version of free (If you weren't
around during the Linux 1.x days, that's the only version of free you'll have)).
The time the system was booted.
The average number of jobs running, followed by the number of runnable processes
and the total number of processes (if your kernel is recent enough), followed by
the PID of the last process run (idem).
user: The amount of time spent running jobs in user space.
nice: The amount of time spent running niced jobs in user space.
The amount of time spent running in kernel space. Note: the time spent servicing
interrupts is not counted by the kernel (and nothing that procinfo can do about
idle: The amount of time spent doing nothing.
The time that the system has been up. The above four should more or less add up to
The number of disk block paged into core from disk. (A block is almost always 1
The reverse of the above. (What does that mean, anyways?)
The number of memory pages paged in from swapspace.
The number of memory pages paged out to swapspace.
The total number of context switches since bootup.
The number of times your hard disks have been accessed. This won't work for
1.0.x/1.1.x kernels unless you have applied the diskstat patch available elsewhere
to your kernel, and might give surprising results if all your hard disks are of the
same type (e.g. all IDE, all SCSI). [I'm not sure to what extend this is still true
with recent kernels, but I don't have a mixed system so I can't check.]
This is either a single number for all IRQ channels together if your kernel is
older than version 1.0.5, or two rows of numbers for each IRQ channel if your ker-
nel is at version 1.0.5 or later. On Intel architecture there are sixteen different
IRQ channels, and their default meanings are as follows:
0 Timer channel 0
2 Cascade for controller 2 (which controls IRQ 8-15)
3 Serial Port 2
4 Serial Port 1
5 Parallel Port 2
6 Floppy Diskette Controller
7 Parallel Port 1
8 Real-time Clock
9 Redirected to IRQ2
13 Math Coprocessor
14 Hard Disk Controller
Note that the meanings of the IRQ channels for parallel ports, serial ports and
those left empty may have been changed depending on your hardware setup. If that's
the case on your machine, you're probably aware of it. If you're not, upgrade to at
least Linux 1.1.43 and let procinfo enlighten you about who uses what.
The modules (loadable device drivers) installed on your machine, with their sizes
in kilobytes. (Only with -m or -a option). Modules with a use count larger than 0
are marked with an asterisk.
Character and Block Devices:
All available devices with their major numbers. (Only with -m or -a option).
All available file systems. (Only with -m or -a option). Those that do not require
an actual device (like procfs itself) are noted between square brackets.
-f Run procinfo continuously full-screen.
-nN Pause N second between updates. This option implies -f. It may contain a decimal
point. The default is 5 seconds. When run by root with a pause of 0 seconds, the
program will run at the highest possible priority level.
-m Show info about modules and device drivers instead of CPU and memory stats.
-a Show all information that procinfo knows how to find.
-d For memory, CPU times, paging, swapping, disk, context and interrupt stats, display
values per second rather than totals. This option implies -f.
-D Same as -d, except that memory stats are displayed as totals.
-S When running with -d or -D, always show values per second, even when running with
-n N with N greater than one second.
-Ffile Redirect output to file (usually a tty). Nice if, for example, you want to run
procinfo permanently on a virtual console or on a terminal, by starting it from
init(8) with a line like:
p8:23:respawn:/usr/bin/procinfo -biDn1 -F/dev/tty8
-b If your kernel is recent enough to display separate read and write numbers for disk
I/O, the -b flag makes procinfo display numbers of blocks rather that numbers of
I/O requests (neither of which is, alas, reliably translatable into kilobytes).
-i Normally the IRQ portion of the display is squeezed to only display non-zero IRQ
channels. With this option you'll get the full list, but on Alphas and on Intel
boxen with 2.1.104 kernels or later procinfo won't fit inside a 80x24 screen any-
more. Price of progress, I suppose.
-r This option adds an extra line to the memory info showing 'real' free memory, just
as free(1) does.
-h Print a brief help message.
-v Print version info.
When running procinfo fullscreen, you can change its behaviour by pressing n, d, D, S, i,
m, a, r and b, which have the same effect as the corresponding command line options. In
addition you can press q which quits the program; s which switches back to the main screen
after pressing m or a; t which switches back to displaying totals after pressing d or D;
<space> which freezes the screen untill you press another key again; C and R which sets
and releases a checkpoint in totals mode; and finally Ctrl-L which refreshes the screen.
/proc The proc file system.
What, me worry?
free(1), uptime(1), w(1), init(8), proc(5).
Sander van Malssen <firstname.lastname@example.org>
18th Release 2001-03-02 PROCINFO(8)