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Tools reference

Appendix A

Tools reference

A variety of tools are available to monitor system performance or report on the usage of system resources such as disk space, interprocess communication (IPC) facilities, and pipes:

df
Reports the amount of free disk blocks on local disk divisions. See ``df -- report disk space usage'' and df(C) for more information. Also see the descriptions of the related commands: dfspace(C) and du(C).

ipcs
Reports the status of System V interprocess communication (IPC) facilities -- message queues, semaphores, and shared memory. See ipcs(ADM) for more information.

netstat
Reports on STREAMS usage and various network performance statistics. It is particularly useful for diagnosing if a network is overloaded or a network card is faulty. See netstat(TC) for more information. See also ndstat(ADM) which reports similar information.

nfsstat
Reports NFS statistics on NFS servers and clients. It is particularly useful for detecting problems with NFS configuration. See nfsstat(NADM) for more information.

ping
Can be used to test connectivity over a network. See ping(ADMN) for more information.

pipestat
Reports on the usage of ordinary and high performance pipes. See pipe(ADM) for more information.

ps
Reports on processes currently occupying the process table. See ``ps -- check process activity'' and ps(C) for more information.

sar
Samples the state of the system and provides reports about various system-wide activities. See ``sar -- system activity reporter'' and sar(ADM) for more information.

swap
Reports on the amount of available swap space or configures additional swap devices. See ``swap -- check and add swap space'' and swap(ADM) for more information.

timex
Reports on system resource usage during the execution of a command or program. See ``timex -- examine system activity per command'' and timex(ADM) for more information. See also the description of the related command, time(C).

traceroute
Traces the route that network packets take to reach a given destination. See traceroute(ADMN) for more information.

vmstat
Reports on process states, paging and swapping activity, system calls, context switches and CPU usage. See ``vmstat -- virtual memory statistics'' and vmstat(C) for more information.

Next topic: df -- report disk space usage

© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003