On-Line Monitoring: A Tutorial ( Beth A. Schroeder ; IEEE Computer Magazine 1995-06)

Unix Programming FAQ System Information []

Unix SAR? [2002/05/06]

Measuring Usage of Distributed Resources? [2002/03/26]

Worldwide Performance/Usage Monitoring Software? [ 1999/08/21]

Performance Monitoring for Linux [ 1999/06/14]

How Powerful is Your Computer? [ 1999/02/18]

Questions and Answers

hostname(1) - set or print name of current host system {oss}

machine(1) - print machine type {oss}

pagesize(1) - print system page size {oss}

systat(1) - display system statistics on a crt {oss}

uname(1) - Print operating system name {oss}

uptime(1) - show how long system has been running {oss}

users(1) - list current users {oss}

w(1) - display users who are logged on and what they are doing {oss}

who(1) - display who is logged in {oss}

arch(1) - print architecture type {oss}

iostat(8) - report I/O statistics {oss}

modstat(8) - display status of loaded kernel modules {oss}

ldconfig(8) - configure the shared library cache {oss}

modload(8) - load a kernel module {oss}

modunload(8) - unload a kernel module {oss}

mopd(8) - MOP Loader Daemon {oss}

kvm_mkdb(8) - create kernel database {oss}

pstat(8) - display system data structures {oss}

rstatd rpc.rstatd(8) - kernel statistics server {oss}

rwhod(8) - system status server {oss}

savecore(8) - save a core dump of the operating system {oss}

sysctl(8) - get or set kernel state {oss}

swapon(8) - specify additional device for paging and swapping {oss}

apm(8) - Advanced Power Management control program {oss}

QOS - QOS is a monitoring system. It can monitor Cpu, Disk, Memory, etc. on a large number of hosts. It can also monitor web, DNS, and other network services. It logs a lot of information about the entities it monitors. It's a distributed system, but it's c {oss}

ESM - ESM (Extensible System Monitor) is a daemon that lets you tie together plugins to monitor and report on your system. The plugins communicate with ESM via standard input and standard output and can be easilly written in any language. {(L)GPL}

Xlogmaster - is an X11 program that does comfortable and fast monitoring of all logfiles and every device that allows its status being read by cat (like the /proc devices). {GPL,GNU}

lmmon-0.65 - Display information gathered from MB power management controller

yawho-1.2 - Simple 'w'-like program; displays connection type and login shell PID

wmcube-0.98 - Window Maker dockapp that displays cpu load and a realtime 3d object

whowatch-1.4 - Displays information in real time about users currently logged on

healthd-0.6.7 - A daemon to monitor vital motherboard parameters

nut-0.45.3 - Network UPS Tools

gupsc-0.3.1 - A free Gnome client for the Network UPS Tools

consolehm-1.31_1 - Console based hardware monitor for FreeBSD

battstat-applet-2.0.4 - A laptop battery monitor utility for the GNOME panel

wmfire-0.0.3.9 - Window Maker dock app showing load average as a flame

wmhm-1.46 - WindowMaker dockable hardware monitor for FreeBSD

xbatt-1.2.1 - Laptop battery status display for X11

xbattbar-1.4.2_2 - Simple battery meter

xsysstats-1.34 - A system information display tool

yaunc-0.06_1 - Yet Another uptimes.net client

gkrellm-1.2.11 - A GTK based system monitor

sntop-1.4.2 - Monitor status of network nodes using fping

asmon-0.60 - A swallowable applet monitors the CPU usage, memory and swap, etc

nsc-0.51 - Netsaint Console monitor

wmcpuload-0.9.0 - An "lcd" dockapp for windowmaker, which displays the current cpuload

ruby-libgtop-0.1.0 - A Ruby interface to libgtop

perf-1.5 - Xview-based system monitoring tool

ttyload-0.4.4 - Give a color-coded graph of load averages over time

wmmemmon-0.7.0 - Mem/Swap monitoring dockapp for WindowMaker

icukrell-0.1.3 - GKrellM plugin which shows status of gnomeICU

cpuid-3.3 - CPU identification utility

xmotd-1.16 - A message-of-the-day browser for X11 and dumb-terminals

bubblemon-dockapp-1.40 - X eye candy for displaying CPU and memory load in a dock

apcupsd-3.8.5_1 - A daemon for controlling APC UPS

asapm-2.9 - Laptop battery status display for X11

audit-1.0 - Tools for remote and centralized audit data collection

bbapm-0.0.1 - APM monitor for the Blackbox slit

bsdsar-0.10 - System Activity Reporter for FreeBSD

gkrellflynn-0.4 - Flynn is a tiny system load meter for gkrellm

p5-Term-ProgressBar-1.0 - Perl extension to display a progress bar

slmon-0.5.9_1 - S-Lang System Monitor

wmfstatus-0.4 - General purpose LCD display for the WindowMaker dock

wmlongrun-0.2.0 - A dockapp to monitor the LongRun(tm) status on Crusoe

wmzazof-0.3 - A simple dockapp that displays the uptime, free and used memory

x86info-1.8 - Utility to display information about the systems x86 processor(s)

xmbmon-107p1 - X/tty motherboard monitor for LM78/79, W8378x, AS99127F and VT82C686

bkpupsd-1.0a - A simple UPS daemon for APC BK Pro(TM)

gtop-1.0.13 - GNOME system moniter program

libretto-config-1.0.b5 - Libretto BIOS Setting Program

upsd-2.0.1.6_1 - APC Smart UPS Monitoring Daemon

upsmon-2.1.3 - Basic UPS monitor for the APC SmartUPS devices.

daemontools-0.76_2 - Service monitoring and logging utilities by djb

wmavgload-0.7.0 - Another WindowMaker load gauge

wmmon-1.0b2 - WindowMaker dockable system load/performance monitor.

xcpustate-2.5 - System monitoring utility graphicaly showing cpu load and status. [X]

xperfmon++-2.0 - A graphical X11 system performance monitor

xsysinfo-1.4a - A system information display tool. [X]

watcher - Watcher system monitor program {oss}

top_s375 - Top users display, 2.1 with Symmetric changes {oss}

sysinfo-2.1.2 - Show system information, V2.1.2, {oss}

fuser - Who's using that file? (For Unix-PC) {oss}

ofiles.new - REVISED ofiles, doesn't need Sun source {oss}

untamo2 - Log out idle users {oss}

idledaemon - Yet another idle login checker (BSD 4.2 only) {oss}

fido - Watchdog for users and machines {oss}

utmp - utility to repair broken /etc/utmp files {oss}

idled-1.00 - idle (et al) session detector/sanctioner, V1.00, {oss}

lsof - a successor to fstat and ofiles {oss}

lumberjack - Logfile monitor tool for Suns {oss}

ttyuse - Creates a Summary of daily Terminal usage {oss}

top2 - Top users display for 4.2BSD, Version 2.0 {oss}

pages - Page accounting aide for SysVrel3.1 {oss}

perfmon - line- and screen-oriented interface to rstatd(8) {oss}

idle.users - A simple BSD idle-users daemon {oss}

ofiles.pch - patch to ofiles -- v18i057 {oss}

load - Routines to check the load average {oss}

cputt-2.3 - cpu status monitor for sunos, V2.3 {oss}

ofiles - Find who has files open on BSD, Sun, etc. {oss}

fstat2 - Show file/open status {oss}

getnfswd-1.12 - a replacement for the getwd(2) system call, V1.12, {oss}

nwho - enhanced "who" program {oss}

swho - screen based who (curses, continuous update) {oss}

budpak - Utilities to monitor usage on system {oss}

LCDproc - Displays system statistics on an external LCD display {GPL}

kmemmon - A KDE panel memory monitor {x,GPL}

KTimeMon - Yet another system usage monitor for KDE, with nifty features. {x,GPL}

LinuxInfo - Gives system information about your Linux system {GPL}

check-ps - Reports or kills processes 'hidden' from the system administrator {GPL}

loadwatch - Allows a single child process to run only when the load is within certain bounds {GPL}

Nannie - System file watcher and notification program {GPL}

procps - A package of utilities which report on the state of the system {GPL}

Spong - Simple System/Network Monitoring {GPL}

lm_sensors - LM78 and LM75 drivers {GPL}

up - Replacement program for uptime. {GPL}

WMUpTime - Uptime-dockapp for Window Maker/Afterstep {x,GPL}

wmapm - Small dock-app that shows continually-updated APMstatistics {x,GPL}

xapmload - APM battery charge display grapher for xwindows {x,GPL}

qps - Displays processes in an X11 window {x,GPL}

xps - X/Motif dynamic display the Unix processes tree/forest {x,GPL}

Loadmeter - System monitoring app for X11 that displays stats and info {x,GPL}

tkAbout - Summarizes CPU, memory, and disk data in a nice GUI window {x,GPL}

TkWho - Graphical frontend to the Unix who, ps, and finger commands. {x,GPL}

WMCpu - CPU/System stats monitor {x,GPL}

WMLmMon - Lm78/75 monitor applet for WindowMaker {x,GPL}

wmbattery - APM status dock app {x,GPL}

WMSysMon - System monitor dock app for WindowMaker/AfterStep {x,GPL}

mpstat - Helps monitoring SMP machines {LGPL}

backupsd - APC Back-UPS shutdown software for NetBSD {BSL}

gogmagog - Lightweight, robust, UNIX systems integrity monitor {PD}

procinfo - A package to allow you to get useful information from /proc.

hifs {unknown}

SuperHifs {unknown}

top - A Top-CPU usage display {unknown}

treeps - X/Motif graphical process tree visualizer {freely distributable}

lsof - List open files {free to use but restricted}

Gpulse - CPU monitor like Pulse from BeOS {x,Freeware}

asapm - X11 application with AfterStep look for monitoring APM on laptops [X] {GPL}

gtkapm - Advanced X11 batterymonitor using prediction algorithm [X] {GPL}

wmlm78 - WindowMaker utility to display system monitor information from a lm78 chip [X] {GPL}

wmsensors - wmsensors draws graphs of data from your sensor chips [X] {GPL}

Xproc - GTK-based system information program [X] {GPL}

Applications and Utilities

clock_gettime clock_settime clock_getres (2) - get/set/calibrate date and time {oss}

getdtablesize (3) - get descriptor table size {oss}

uname (3) - get system identification {oss}

getloadavg (3) - get system load averages {oss}

getpagesize (3) - get system page size {oss}

sysconf (3) - get configurable system variables {oss}

sysctl (3) - get or set system information {oss}

confstr (3) - get string-valued configurable variables {oss}

fstat - Show all open files status {oss}

getnfswd - a replacement for the getwd(2) system call {oss}

LibGTop 0.100.0 - A library that fetches information about the running system such as cpu ... {x,GPL}

Libraries and Functions

(The following links to subjects at this site retain your personalized selections.)

System Administration - Configuration, installing software, adding users, setting limits, system startup (boot) et al.

See also: Hardware Access - Gateway topic to hardware and real-time related processing routines.

See also: Remote System Information - Obtaining (or providing) system information like status, who is logged in, the local time, et al. Command - FAQs

Network related local information is covered under Communications

Program Environment Variables - Getting/ Setting program environment variables

Running Process Information - Getting information on running processes.

Process Limits - Permission and access restriction (files, resources, etc)

Up to Execution

freshmeat.net : Topic : System : Power (UPS)

freshmeat.net : Topic : System : Networking : Monitoring : Hardware Watchdog

(Metalab at UNC) /pub/linux/system/status/ps/ - various types of ps commands

(Metalab at UNC) /pub/linux/system/status/xstatus/ - display information about your system

(Metalab at UNC) /pub/linux/system/status/ - tools for finding the status of your system