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!!NAME procinfo - display system status gathered from /proc !!SYNOPSIS __procinfo__ [[ ''-fsmadiDSbrChv'' ] [[ ''-n'' N ] [[ ''-F'' file ] !!DESCRIPTION __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: __Memory:__ ;: 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)). __Bootup:__ ;: The time the system was booted. __Load__ ''average:'' ;: 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. __system:__ ;: 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 it). __idle:__ ;: The amount of time spent doing nothing. __uptime:__ ;: The time that the system has been up. The above four should more or less add up to this one. __page__ ''in:'' ;: The number of disk block paged into core from disk. (A block is almost always 1 kilobyte). __page__ ''out:'' ;: The reverse of the above. (What does that mean, anyways?) __swap__ ''in:'' ;: The number of memory pages paged in from swapspace. __swap__ ''out:'' ;: The number of memory pages paged out to swapspace. __context:__ ;: The total number of context switches since bootup. __disk__ ''1-4:'' ;: 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.] __Interrupts:__ ;: 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 kernel 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 __1__ Keyboard __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 __10__ -- __11__ -- __12__ -- __13__ Math Coprocessor __14__ Hard Disk Controller __15__ -- 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. __Modules:__ ;: 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. Deleted modules are marked with a `d', uninitialized modules with a `u', and modules with a bad state flag with a `b'. __Character__ ''and'' __Block__ ''Devices:'' ;: All available devices with their major numbers. (Only with __-m__ or __-a__ option). __File__ ''Systems:'' ;: 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. !!OPTIONS ;__-f__ : Run __procinfo__ continuously full-screen. ;__-n__ ''N'' : 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. ;__-F__ ''file'' : 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 anymore. 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. !!INTERACTIVE COMMANDS 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. !!FILES ;__/proc__ : The proc file system. !!BUGS What, me worry? !!SEE ALSO free(1), uptime(1), w(1), init(8), proc(5). !!AUTHOR Sander van Malssen <svm''@''kozmix.cistron.nl>
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