зеркало из https://github.com/mozilla/pjs.git
73 строки
2.5 KiB
Perl
Executable File
73 строки
2.5 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# -*- Mode: Perl; tab-width: 4; indent-tabs-mode: nil; -*-
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# ***** BEGIN LICENSE BLOCK *****
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# Version: MPL 1.1/GPL 2.0/LGPL 2.1
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#
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# The contents of this file are subject to the Mozilla Public License Version
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# 1.1 (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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# http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS IS" basis,
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# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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# for the specific language governing rights and limitations under the
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# License.
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#
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# The Original Code is Mozilla Automated Testing Code.
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#
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# The Initial Developer of the Original Code is
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# Mozilla Corporation.
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# Portions created by the Initial Developer are Copyright (C) 2008
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# the Initial Developer. All Rights Reserved.
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#
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# Contributor(s): Bob Clary <bob@bclary.com>
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#
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# Alternatively, the contents of this file may be used under the terms of
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# either the GNU General Public License Version 2 or later (the "GPL"), or
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# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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# in which case the provisions of the GPL or the LGPL are applicable instead
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# of those above. If you wish to allow use of your version of this file only
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# under the terms of either the GPL or the LGPL, and not to allow others to
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# use your version of this file under the terms of the MPL, indicate your
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# decision by deleting the provisions above and replace them with the notice
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# and other provisions required by the GPL or the LGPL. If you do not delete
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# the provisions above, a recipient may use your version of this file under
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# the terms of any one of the MPL, the GPL or the LGPL.
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#
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# ***** END LICENSE BLOCK *****
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# Calculate a relative speed measurement based on
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# iterating over a simple loop in perl. Print the
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# result as millions of iterations per cpu second.
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sub mips
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{
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my $tries = 3; # repeat count to get average
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my $m = 1000000; # scale to million iterations/second
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my $l = 10000000; # number of iterations to time
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my $cpu = 0; # cpu time accumlator
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my $dummy = 0; # dummy variable to prevent optimizations
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my $i;
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my $start;
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my $stop;
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my $a;
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for ($a = 0; $a < $tries; ++$a)
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{
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$start = (times)[0];
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for ($i = 0; $i < $l; ++$i)
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{
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$dummy += $i;
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}
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$stop = (times)[0];
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$cpu += $stop - $start;
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}
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$cpu /= $tries;
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print "" . int($l/($cpu*$m)) . "\n";
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return $dummy; # reuse dummy variable
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}
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mips;
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