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Man Pages


Manual Reference Pages  -  XCPUSTATE (1)

NAME

xcpustate - display CPU states (idle, nice, system, kernel) statistics

CONTENTS

Syntax
Description
Options
X Defaults
Notes
See Also
Authors
Bugs

SYNTAX

xcpustate [ -toolkitoption ...] [ -count iterations] [ -interval seconds] [ -shorten components] [ -cpu] [ -nocpu] [ -disk] [ -nodisk] [ -omni] [ -noomni] [ -wait] [ -nowait] [ -filltype auto|grayscale|color|tile|stipple] [ -host hostname] [ -version] [ -colors colorname[,colorname[,...]]] [ -avg iterations][ -kernel pathname] [ -mmap] [ -nommap]

DESCRIPTION

Xcpustate displays bars showing the percentage of time the CPU spends in different states. On some systems, it optionally indicates disk states in the same manner. It can also query remote systems that offer RSTAT RPC services.

When using the RSTAT protocol, or when running locally on machines running Cygwin, or Berkeley Unix or a derivative (eg. suns with SunOS<=4.1.1, microVaxen with Ultrix), the bar indicates the proportions of idle, user, nice, and system time with increasing levels of grayscale or color (from left to right). When running locally on supported multiprocessors (Solbourne OS/MP systems, Ultrix multiprocessors, Linux/SMP, and the Gould NP1), there will be one bar for each CPU.

On Linux systems, each CPU bar indicates the proportions of idle, user, nice, and system time, respectively, from left to right. Each disk drive bar indicates the proportions of idle, read I/O operations, and write I/O operations, from left to right. For disk drive bars, the I/O operations are displayed on a sliding scale, the entire bar corresponding to the maximum total (read and write) number of I/O operations per interval since xcpustate was started, and read/write I/O operations shown as fractions of the current maximum. For disk drive bar display under Linux, xcpustate relies on the "disk_io" statistics in /proc/stat (2.4 kernels) or the information in /proc/diskstats (2.6 or later kernels).

On systems running OpenBSD 3.0 or later, each CPU bar indicates the proportions of idle, user, nice, interrupt, and system time, respectively, from left to right.

On an SGI system running IRIX, there will be one bar for each CPU, indicating the proportions of idle + wait, user, kernel, sxbrk and interrupt time for that CPU. If the ‘‘wait’’ option is set, the bars indicate idle, wait, user, kernel, sxbrk, and interrupt time, from left to right.

On a Sun multiprocessor under SunOS 4.1.2 or 4.1.3, bars indicate the proportions of idle + diskwait, user, nice, system, spinlock, and crosscall service time for each CPU.

On a Sun or other system (eg. Solbourne, Cray Superserver-6400) running Solaris 2.x or later, and on an IBM system running AIX, bars indicate the proportions of idle + wait, user, and kernel time for each CPU. If the ‘‘wait’’ option is set, the bars indicate idle, wait, user, and system/kernel time, from left to right.

On a Cray X/MP or Y/MP running Unicos 5.1 or greater, bars indicate the proportions of idle + wait, user and system/kernel time for each CPU.

On systems running the Mach operating system, bars indicates the proportions of user, system, and idle time for each CPU.

On supported SVR4 systems (e.g. Dell Unix 2.2), a single bar is displayed showing idle, user, system and wait times.

On NCR SVR4 MP/RAS systems, one bar for each CPU (or disk drive) is displayed. Each bar indicates the relative proportions of idle, user, system and wait times for that CPU. Disk drive times show device idle and busy.

OPTIONS

Xcpustate accepts all of the standard X Toolkit command line options, plus:
-count iterations
  The number of times it should update the display. Default is forever.
-avg iterations
  The number of iterations the bar values should be averaged over. Default is one.
-interval seconds
  the interval in seconds (fractions permitted) between updates. Default is 1 second.
-shorten components
  On some systems, xcpustate will display the hostname in the bar labels. Since some fully qualified domain names can be very long, this option allows them to be shortened to a specific number of components. eg. if your hostname is foo.wherever.edu, you can shorten it to foo by specifying -shorten 1 or to foo.wherever by specifying -shorten 2 . Specifying -shorten 0 will omit the hostname completely; a negative number will cause xcpustate to draw unlabeled bars. Some systems may not support this option.
-cpu Display CPU statistics (default).
-nocpu Do not display CPU statistics.
-disk Display Disk statistics. This is supported only on Suns running SunOS 4.x or 5.x, on Linux systems, or when using RSTAT. One bar is displayed for each disk. Disk bars appear below the CPU bars, if any. When using RSTAT, exactly four bars appear regardless of the number of disks on the remote host (this is a limitation of the current version of the RSTAT protocol). For Suns running SunOS 4.x, the bars report idle, seek, and transfer time. For Suns running SunOS 5.x, the bars report idle, wait, and run time. For Linux systems, the bars report idle, read I/O operations and write I/O operations. When RSTAT is being used, the bars report idle and transfer time.
-nodisk Do not display disk statistics (default).
-omni Display Omni Network Coprocessor Statistics. This is supported only on Suns running SunOS 4.x. One bar is displayed for each Network Coprocessor, and placed immediately below the bars for the regular CPU(s). Each bar indicates idle and system time.
-noomni Do not display omni statistics (default).
-wait Display CPU disk/system wait time as a separate statistic on applicable systems (Eg. SunOS 5.x, SGI IRIX, IBM AIX).
-nowait Include CPU disk/system wait time as part of idle (default).
-version Print out version information and exit.
-filltype
  Specify the method xcpustate should use to fill the bars. Available options include grayscale, color, tile, stipple, or auto. Auto automatically chooses between tiling, grayscale, and colour, depending on your display type. Auto is the default.
-colors Specify the colors used to draw the bars. Colors are specified in left-to-right order, separated by commas. A single dot can be used to specify the default color at that position. Up to ten colors may be specified. Defaults are used for the leftmost colors if less than ten are specified.
-kernel pathname
  Specify the path that xcpustate will use to find kernel symbol file information on some systems. This option is ignored on IRIX, Mach, and SunOS 5.x.
-mmap Request that xcpustate use mmap to directly map kernel memory into the current process address space on some systems (SVR4 and NCR). This is the default.
-nommap Inverse of mmap option.

X DEFAULTS

For xcpustate the available class identifiers are:

CPUStateMonitor - the application
Form - enclosing the entire application, and sub-Forms enclosing
Label/Bar pairs.

For xcpustate, the available name identifiers are:

xcpustate - application name
The outer Form is "form".
The Forms enclosing the Label/Bar pairs are "formN", where N is the
index number, starting with the top pair as zero.
Each Label name is the same as the label string.
Each Bar name is "barN".

For xcpustate, the available resources are:
name interval, class Interval corresponds to the -interval option. Takes a float value.
name count, class Count corresponds to the -count argument. Takes an integer value.
name avg, class Avg corresponds to the -avg argument. Takes an integer value.
name shorten, class Shorten corresponds to the -shorten argument. Takes an integer value.
name cpu, class Cpu corresponds to the -cpu and -nocpu arguments. Takes a boolean value.
name disk, class Disk corresponds to the -disk and -nodisk arguments. Takes a boolean value.
name omni, class Omni corresponds to the -omni and -noomni arguments. Takes a boolean value. Not available on systems other than Suns running SunOS 4.x.
name wait, class Wait corresponds to the -wait and -nowait arguments. Takes a boolean value.
name filltype, class Filltype corresponds to the -filltype argument. Takes a string.
name host, class Host corresponds to the -host argument. Takes a hostname.
name colors, class Colors corresponds to the -colors argument. Takes a comma-separated list of color names.
name mmap, class Mmap corresponds to the -mmap and -nommap argument. Takes a boolean value.
name kernel, class Kernel corresponds to the -kernel argument. Takes a pathname.

NOTES

Xcpustate is meant to be easy to port, and extend to monitor a wide variety of statistics.

SEE ALSO

xperfmon, xload, xmeter

AUTHORS

Mark Moraes at D. E. Shaw wrote the original X code and the SGI IRIX code. He also enhanced the code for the Bar widget to support color. John DiMarco at the University of Toronto is the current maintainer. He contributed to the color support, fixed some minor problems, added support for SunOS 4.x multiprocessors, SunOS 5.x, disks, Omni network coprocessors, AIX (SMP on AIX 4.x) and RSTAT. Thanks to David O’Brien of the University of California, Davis for the 4.4BSD code, Chris Siebenmann of the University of Toronto for the code for 4.3BSD systems; Walter D. Poxon from Cray Research for the code for Cray machines running Unicos; Melinda Shore at mt Xinu for the code for Mach systems; Bill Kucharski at Solbourne for the code for Solbourne systems; Salvador Pinto Abreu at Universidade Nova de Lisboa, Portugal, for the code for Ultrix multiprocessors; Hugues Leroy at Irisa, Rennes, France for the code for Gould NP1 bi-processors, Bruce Frost at NCR for the code for (Dell) SVR4 and NCR systems, and Kumsup Lee at the University of Minnesota and Greg Nakhimovsky at Sun Microsystems for the Linux code. Thanks also to Robert Montjoy from the University of Cincinatti for contributing and testing some of the SunOS 5.x code, to Dave Cahlander from Cray for cleaning up the X resource code, and to Ron Wigmore from Ryerson Polytechnic University for his assistance with the AIX port.

BUGS

The RSTAT RPC protocol supports only one processor and four disks on the remote system. On a multiprocessor, the CPU data reported by RSTAT will be an average of all the active CPUs on the machine.

For some operating systems, there may be internal compile-time limits on the number of CPUs or disks supported. If there are compile-time limits, they are reported by the output of the -version flag.

Xcpustate may initially display nonsensical data, before being updated the first time.

The use of very small (significantly less than one second) intervals may result in xcpustate using significant resources, particularly when running over the network. A minimum interval may be specified as a compile-time option, and intervals less than this will not be permitted.

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