author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 09:24:54 +0200 | |
changeset 43 | 96e5fb8b040d |
child 44 | 36bfc973b146 |
permissions | -rw-r--r-- |
43
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#!/usr/bin/perl -w |
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# Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
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# All rights reserved. |
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# This component and the accompanying materials are made available |
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# under the terms of "Eclipse Public License v1.0"" |
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# which accompanies this distribution, and is available |
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# at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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# |
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# Initial Contributors: |
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# Nokia Corporation - initial contribution. |
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# |
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# Contributors: |
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# |
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# Description: |
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# USBperformance - write file to / read file from |
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# a USB Mass Storage device, |
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# measure the time taken, |
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# and display the data rate achieved. |
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# |
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# |
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|
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use strict; |
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use File::Copy; |
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use Getopt::Long; |
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use Pod::Usage; |
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|
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pod2usage("$0: Specify at least a target drive.\n") if (@ARGV < 1); |
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|
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my $help = 0; |
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my $size = 400; |
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my $reading = 0; |
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my $local_file = "gobble.dat"; |
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|
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my %opts = ('help' => \$help, |
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'size=s' => \$size, |
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'read=s' => \$reading); |
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|
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GetOptions(%opts) || pod2usage(2); |
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pod2usage(-exitval => 1, -verbose => 2) if $help; |
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$size = 1 if $size < 1; |
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my $drive = $ARGV[@ARGV - 1]; |
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$drive =~ s/\\/\//g; |
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$drive .= "/" unless ($drive =~ m/\/$/); |
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print "Remote drive: " . $drive . "\n"; |
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my $remote_file = "$drive$local_file"; |
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|
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# If set to nonzero $¦ forces a flush right away and after every write or print |
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# on the currently selected output channel. |
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$¦ = 1; |
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|
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if ($reading == 0) |
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{ |
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print "Writing a $size MB file to the remote directory.\n"; |
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print "Creating source file \"$local_file\"...\n"; |
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create_gobblefile(); |
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print "Writing target file \"$remote_file\"...\n"; |
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my $write_time = writefile(); |
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print "File write took $write_time seconds.\n"; |
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printf "That's about %.2f MB/s.\n", ($size / $write_time); |
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} |
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else |
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{ |
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print "Reading file from a remote directory.\n"; |
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-e $remote_file or die "Remote file \"$remote_file\" doesn't seem to exist"; |
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-z $remote_file and die "Remote file \"$remote_file\" seems to be empty"; |
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my $size_bytes = -s $remote_file; |
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$size = $size_bytes / 1024 / 1024; |
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print "Reading source file \"$remote_file\" ($size_bytes bytes = $size MB)...\n"; |
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my $read_time = readfile(); |
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print "File read took $read_time seconds.\n"; |
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printf "That's about %.2f MB/s.\n", ($size / $read_time); |
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unlink $local_file; |
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} |
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|
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|
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# --- subs |
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|
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sub writefile |
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{ |
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my $start = time(); |
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move($local_file, $remote_file); |
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return (time() - $start); |
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} |
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|
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sub readfile |
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{ |
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my $start = time(); |
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move($remote_file, $local_file); |
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return (time() - $start); |
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} |
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|
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sub create_gobblefile |
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{ |
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open FILE, ">$local_file " or die $!; |
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my $realsize = ($size * 1024 * 1024) / 40; |
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my $i = 0; |
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while ($i++ < $realsize) |
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{ |
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# Add 40 characters |
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print FILE '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcd' or die $!; |
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} |
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close FILE; |
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} |
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###################################################################### |
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__END__ |
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=head1 NAME |
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usbperformance.pl - Create a large file and write it to a Mass Storage device, or |
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read it back. |
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=head1 SYNOPSIS |
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Usage: usbperformance.pl [options] <USB drive> |
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<USB drive>: The path to / drive letter of the USB Mass Storage device. |
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=head1 OPTIONS |
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=over 3 |
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=item --help |
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Displays this help. |
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=item --size=<size> |
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The size of the file to be created to measure the speed connection. |
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Size is expected in MB. Default value if no option given is 400 MB. |
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=item --read=<0/1> |
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0 to write |
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1 to read |
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|
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Default value if no option given is 0 (write). |
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Ensure the card/device has been ejected and thus flushed before you do the |
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reading test after the writing case, otherwise the content will be cached by |
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the local OS and the time measured won't be realistic. |
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|
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'Write' will leave the transferred file on the remote disk, but 'Read' will |
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delete it (moving it to the local PC). So a practical test order is: |
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|
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'Write' test, then disconnect/re-connect USB drive, then 'Read' test. |
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|
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This sequence will start and finish with an empty USB disk. |
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=back |
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=head1 DESCRIPTION |
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This is a simple utility to create a file on a mass storage unit and measure |
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the performance in MB / seconds of the USB connection. |
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|
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=head2 Test Case Specification |
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|
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TestCaseID: PBASE-PREQ709-0045-Performance |
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TestType: IT |
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TestCaseDesc: Test Mass Storage performance on different platforms |
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(Windows 2000/XP/ME, MacOS) (Manual test) |
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|
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TestActions: |
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|
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Build a ROM with usbmsapp.exe on it. Connect the board to the PC with an USB |
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cable. Execute usbmsapp.exe on the device to map the mass storage unit (MMC/SD |
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card) onto the PC. Execute this script on the PC, and make sure the card has |
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free space for the file that is going to be created. The default size is 400 |
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MB. |
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|
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=head1 COPYRIGHT |
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|
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Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. |
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=cut |