time.n
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- '"
- '" Copyright (c) 1993 The Regents of the University of California.
- '" Copyright (c) 1994-1996 Sun Microsystems, Inc.
- '"
- '" See the file "license.terms" for information on usage and redistribution
- '" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- '"
- '" RCS: @(#) $Id: time.n,v 1.3.18.1 2004/10/27 14:43:14 dkf Exp $
- '"
- .so man.macros
- .TH time n "" Tcl "Tcl Built-In Commands"
- .BS
- '" Note: do not modify the .SH NAME line immediately below!
- .SH NAME
- time - Time the execution of a script
- .SH SYNOPSIS
- fBtime fIscriptfR ?fIcountfR?
- .BE
- .SH DESCRIPTION
- .PP
- This command will call the Tcl interpreter fIcountfR
- times to evaluate fIscriptfR (or once if fIcountfR isn't
- specified). It will then return a string of the form
- .CS
- fB503 microseconds per iterationfR
- .CE
- which indicates the average amount of time required per iteration,
- in microseconds.
- Time is measured in elapsed time, not CPU time.
- .SH EXAMPLE
- Estimate how long it takes for a simple Tcl fBforfR loop to count to
- a thousand:
- .CS
- time {
- for {set i 0} {$i<1000} {incr i} {
- # empty body
- }
- }
- .CE
- .SH "SEE ALSO"
- clock(n)
- .SH KEYWORDS
- script, time