48 lines
1.1 KiB
Plaintext
48 lines
1.1 KiB
Plaintext
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'\"
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'\" Copyright (c) 1993 The Regents of the University of California.
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'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
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'\"
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'\" See the file "license.terms" for information on usage and redistribution
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'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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'\"
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.TH time n "" Tcl "Tcl Built-In Commands"
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.so man.macros
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.BS
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'\" Note: do not modify the .SH NAME line immediately below!
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.SH NAME
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time \- Time the execution of a script
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.SH SYNOPSIS
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\fBtime \fIscript\fR ?\fIcount\fR?
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.BE
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.SH DESCRIPTION
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.PP
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This command will call the Tcl interpreter \fIcount\fR
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times to evaluate \fIscript\fR (or once if \fIcount\fR is not
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specified). It will then return a string of the form
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.PP
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.CS
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\fB503.2 microseconds per iteration\fR
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.CE
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.PP
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which indicates the average amount of time required per iteration,
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in microseconds.
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Time is measured in elapsed time, not CPU time.
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.SH EXAMPLE
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Estimate how long it takes for a simple Tcl \fBfor\fR loop to count to
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a thousand:
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.PP
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.CS
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time {
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for {set i 0} {$i<1000} {incr i} {
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# empty body
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}
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}
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.CE
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.SH "SEE ALSO"
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clock(n)
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.SH KEYWORDS
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script, time
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.\" Local Variables:
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.\" mode: nroff
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.\" End:
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