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Annotation of cci/usr/src/man/man1/iostat.1, revision 1.1

1.1     ! root        1: .TH IOSTAT 1 "18 January 1983"
        !             2: .UC 4
        !             3: .SH NAME
        !             4: iostat \- report I/O statistics
        !             5: .SH SYNOPSIS
        !             6: .B iostat
        !             7: [ interval [ count ] ]
        !             8: .SH DESCRIPTION
        !             9: .I Iostat
        !            10: iteratively reports the number of characters read and written to terminals,
        !            11: and, for each disk, the number of seeks transfers per second, kilobytes
        !            12: transfered per second,
        !            13: and the milliseconds per average seek.
        !            14: It also gives the percentage of time the system has
        !            15: spent in user mode, in user mode running low priority (niced) processes,
        !            16: in system mode, and idling.
        !            17: .PP
        !            18: To compute this information, for each disk, seeks and data transfer completions
        !            19: and number of words transferred are counted;
        !            20: for terminals collectively, the number
        !            21: of input and output characters are counted.
        !            22: Also, each sixtieth of a second,
        !            23: the state of each disk is examined
        !            24: and a tally is made if the disk is active.
        !            25: From these numbers and given the transfer rates
        !            26: of the devices it is possible to determine
        !            27: average seek times for each device.
        !            28: .PP
        !            29: The optional
        !            30: .I interval
        !            31: argument causes
        !            32: .I iostat
        !            33: to report once each
        !            34: .I interval
        !            35: seconds.
        !            36: The first report is for  all time since a reboot and each
        !            37: subsequent report is for the last interval only.
        !            38: .PP
        !            39: The optional
        !            40: .I count
        !            41: argument restricts the number of reports.
        !            42: .SH FILES
        !            43: /dev/kmem
        !            44: .br
        !            45: /vmunix
        !            46: .SH SEE ALSO
        !            47: vmstat(1)

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