Appendix A
Monitoring Tools
This appendix describes system utilities you can use to monitor your server environment.
This appendix contains these sections:
General UNIX Tools
Table A-1 lists some general UNIX tools you can use to monitor your server environment. These tools are available on various UNIX platforms. For more information about these tools, see the man pages delivered with your UNIX system.
Table A-1 General UNIX Tools
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Tool
|
Description
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iostat
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Provides information about disk I/O and CPU usage.
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lsof
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Provides information about open file descriptors. Available in source from:
ftp://vic.cc.purdue.edu/pub/tools/unix.
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lslk
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Provides information about file system locks. Available in source from:
ftp://vic.cc.purdue.edu/pub/tools/unix
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netstat
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Provides statistics about network functions.
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nslookup
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Allows you to query DNS servers for information about hosts and domains; for example you can print a list of hosts in a particular domain; also provides an IP address-to-host name mapping function (and vice versa).
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ping
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Allows you to query the status of a remote host or network gateway.
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sar
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UNIX SysV performance monitoring tool. Useful for gathering system information over a longer period of time to use in long term planning, for example.
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tcpdump
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Public domain tools used in debugging and to monitor network traffic.
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top
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Provides quick, easy monitoring of processes and CPU activities. (This is a public domain tool that works on most UNIX platforms.)
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trace
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Similar to truss on Solaris. Sometimes included by the vendor; otherwise, you can download this tool from an Internet site.
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traceroute
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Determines the path a packet takes throughout the Internet to reach its final destination.
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vmstat
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Provides statistics about process, virtual memory, disk, trap, and CPU activity.
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Various Platform-Specific Tools
This section lists system monitoring tools for the following operating systems supported by iPlanet Calendar Server:
Solaris Operating Environment
Table A-2 Solaris System Monitoring Tools
|
Tool
|
Description
|
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lockstat
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Provides information on OS and application locking. Available on Solaris 2.6 only.
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mpstat
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Provides statistics about each processor on the system
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pmap
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Provides breakdown on how much memory a process is using so you can see how much is shared and how much is private.
(Located in /usr/proc/bin.)
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proctool
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Monitors processes and threads. (Available from the Sun web site.)
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snoop
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Monitors network traffic; indispensable when debugging low-level packets.
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SymbEL/Virtual Adrian
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A very powerful system monitoring toolkit. Provides the functionality of the above listed tools and more. Can be used to tune the ncsize and ufs_ninode parameters and even has a mode to tune the operating system automatically.
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truss
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Provides information about which system calls a process makes.
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HP-UX Operating Environment
Table A-3 HP-UX System Monitoring Tools
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Tool
|
Description
|
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glance
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Provides detailed system information about open file descriptors, locks, threads, and so on.
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gpm
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Provides detailed system information about open file descriptors, locks, threads, and so on.
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tusc
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A system call trapper. Might not be available on all systems.
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sysdef
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Provides information about kernel parameters.
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landiag
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A tool for monitoring network statistics.
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sam
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System Administration Manager. A tool for general system administration.
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