cpustat man page on Ultrix

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cpustat(1)							    cpustat(1)

Name
       cpustat - report CPU statistics

Syntax
       cpustat [-cfhsv] [interval [count]]

Description
       The  command displays statistics about the use and state of each CPU in
       the system.  The information about the CPU might change while the  com‐
       mand  is	 running, so the information it gives is a snapshot taken at a
       given time.

       Normally, the command displays the statistics and state only once.  You
       can  cause  the	command	 to repeat the display by specifying a decimal
       number in the interval argument. The command repeats the display	 until
       it  is  interrupted, for example, by a control character entered at the
       terminal.

       You can limit the number of times the command repeats  the  display  by
       specifying an integer in the count argument.

       The command provides an interactive interface that you can invoke using
       the -f option.

       The following describes the fields in the display:

       Statistics: Information about how each CPU's time is being used

	    us%	     Percent of time spent in user mode

	    ni%	     Percent of time spent in nice mode

	    sy%	     Percent of time spent in system mode

	    id%	     Percent of time spent idle

	    csw	     Number of context switches

	    sys	     Number of system calls

	    trap     Number of traps

	    intr     Number of device interrupts

	    ipi	     Number of interprocessor interrupts

	    ttyin    Number of characters input to the terminal

	    ttyout   Number of characters output to the terminal

       State: Information about the different states of each CPU

	    cpuid    Unique identifier of the CPU.

	    state    CPU state.
			B - boot CPU
			D - disable soft errors
			S - stopped
			R - running
			T - TB needs invalidation
			P - panicked

	    ipi-mask interprocessor interrupt mask
			P - panic
			R - console print
			S - schedule
			D - disable
			T - TB invalidation
			H - stop CPU

	    proc     Indication of whether the CPU has an associated  process.
		     A Y indicates that an associated process exists, while an
		     N indicates that no associated process exists.

	    pid	     Process ID of the running process.

	    If any statistic field value exceeds 9999, it is shown in a scaled
	    representation  with  the suffix k, which indicates multiplication
	    by 1000, or with the suffix m, which indicates  multiplication  by
	    1,000,000.	For example, the value 12,345 would appear as 12k.

Options
       -c   Displays only the statistics for each CPU.

       -f   Displays  statistics  and  state information on a full screen.  If
	    you use the -f option, you are prompted to enter one of  the  fol‐
	    lowing commands:

	    c	 Displays only statistics about each CPU.

	    d	 Uses the default mode of display.

	    h	 Displays  the	help screen. To return to the original display
		 screen, enter any character.

	    q	 Quits from the full screen display.

	    s	 Displays only state information about each CPU.

	    v	 Displays information about each vector	 processor  and	 omits
		 information about other processors.

       -s   Displays only state information about each CPU.

       -h   Provides help information about the usage of the command.

       -v   Displays  information about each vector processor and omits infor‐
	    mation about other processors.  When  displays  information	 about
	    vector  processors,	 it adds the following information to the dis‐
	    play:

	    vp state  Indicates that the vector processor is operational (OK),
		      not usable (DEAD), enabled (ENA), or disabled (DIS). The
		      command display  may  contain  a	combination  of	 these
		      states.

	    vp owner  PID of the vector process whose context is stored in the
		      vector processor.

	    chp cxsw  Number of context switches in which  the	process	 whose
		      context  changed	is the only process using a particular
		      vector processor. Because no other process uses the vec‐
		      tor  processor,  the  register  data associated with the
		      processor does not change. Therefore,  the  system  does
		      not need to save and restore the register data; the data
		      remains in the registers until the process is  ready  to
		      use it.

	    exp cxsw  Number  of  context  switches  in which a number of pro‐
		      cesses might be using the same vector  processor.	  When
		      more  than one process uses the same processor, the reg‐
		      ister  data  associated  with  the  processor  might  be
		      changed  by any process. Therefore, the system saves and
		      restores the register data during a context  switch  for
		      any process.

	    succ req  Number  of  times	 the  vector  process has successfully
		      allocated the vector processor.

	    failed req
		      Number of times the vector process has been refused vec‐
		      tor processor allocation.

       If  you omit all options, reports a summary of the statistics since the
       system has been booted and the state of each CPU.

Examples
       To print the system status every five seconds ten times, enter the fol‐
       lowing command:
       % cpustat 5 10

Files
       Virtual main memory image

       System namelist

See Also
       iostat(1), vmstat(1)

								    cpustat(1)
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