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Annotation of researchv10dc/man/adm/man1/time.1, revision 1.1

1.1     ! root        1: .TH TIME 1
        !             2: .CT 1 proc_man time_man debug_tune
        !             3: .SH NAME
        !             4: time \- time a command
        !             5: .SH SYNOPSIS
        !             6: .B time
        !             7: [
        !             8: .B -usrtdmfio
        !             9: ]
        !            10: [
        !            11: .B -v
        !            12: ]
        !            13: .I command
        !            14: .SH DESCRIPTION
        !            15: The
        !            16: given command is executed; after it is complete,
        !            17: .I time
        !            18: reports statistics about the program on its standard error output.
        !            19: The statistics printed are controlled by the option string;
        !            20: the default is
        !            21: .BR -usr ;
        !            22: .B -v
        !            23: reports everything.
        !            24: The statistics are:
        !            25: .TP
        !            26: .B u
        !            27: User cpu time consumed by the command
        !            28: .TP
        !            29: .B s
        !            30: System cpu time attributed to the command
        !            31: .TP
        !            32: .B r
        !            33: Real (clock) time taken by the command
        !            34: .TP
        !            35: .B t
        !            36: Average resident text size, in Kb.
        !            37: .TP
        !            38: .B d
        !            39: Average resident data size, in Kb.
        !            40: .TP
        !            41: .B m
        !            42: Maximum total resident size, in Kb.
        !            43: .TP
        !            44: .B f
        !            45: Number of page faults resulting in disk I/O.
        !            46: .TP
        !            47: .B i
        !            48: Number of disk blocks read.
        !            49: .TP
        !            50: .B o
        !            51: Number of disk blocks written.
        !            52: .PP
        !            53: After the statistics,
        !            54: .I time
        !            55: prints a tab and the command, up to the fifth argument.
        !            56: Times are reported in seconds.
        !            57: The numbers are the sum of those for
        !            58: .I command
        !            59: and any children it spawns and waits for.
        !            60: .SH "SEE ALSO"
        !            61: .IR lcomp (1),
        !            62: .IR prof (1)
        !            63: .SH BUGS
        !            64: Elapsed time is accurate to the second,
        !            65: while the CPU times are measured
        !            66: to 1/60 second.
        !            67: Thus the sum of the CPU times can be up to a second larger
        !            68: than the elapsed time.

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