57 lines
1.4 KiB
Perl
57 lines
1.4 KiB
Perl
|
#!/usr/bin/perl
|
||
|
|
#
|
||
|
|
# benchmark-cpu.pl: benchmark CPU optimizations of mpg123
|
||
|
|
#
|
||
|
|
# initially written by Nicholas J Humfrey <njh@aelius.com>, placed in the public domain
|
||
|
|
#
|
||
|
|
|
||
|
|
use strict;
|
||
|
|
#use Time::HiRes qw/time/;
|
||
|
|
|
||
|
|
my $MPG123_CMD = shift @ARGV;
|
||
|
|
my @TEST_FILES = @ARGV;
|
||
|
|
|
||
|
|
die "Please specify full path to mpg123 >= 1.7.0 and a test MP3 file to decode" if (scalar(@ARGV) < 1);
|
||
|
|
die "mpg123 command does not exist" unless (-e $MPG123_CMD);
|
||
|
|
die "mpg123 command is not executable" unless (-x $MPG123_CMD);
|
||
|
|
for(@TEST_FILES)
|
||
|
|
{
|
||
|
|
die "test MP3 file does not exist" unless (-e $_);
|
||
|
|
}
|
||
|
|
|
||
|
|
# Force unbuffed output on STDOUT
|
||
|
|
#$|=1; # why?
|
||
|
|
|
||
|
|
# Check the CPUs available
|
||
|
|
my $cpulist = `$MPG123_CMD --test-cpu`;
|
||
|
|
chomp( $cpulist );
|
||
|
|
die "Failed to get list of available CPU optimizations" unless ($cpulist =~ s/^Supported decoders: //);
|
||
|
|
|
||
|
|
my @cpus = split( / /, $cpulist );
|
||
|
|
my @encs = qw(s16 f32);
|
||
|
|
|
||
|
|
printf STDERR ("Found %d CPU optimizations to test...\n\n", scalar(@cpus) );
|
||
|
|
|
||
|
|
print "#mpg123 benchmark (user CPU time in seconds for decoding)\n";
|
||
|
|
print "#decoder";
|
||
|
|
for(@encs){ print " t_$_/s"; }
|
||
|
|
print "\n";
|
||
|
|
|
||
|
|
foreach my $cpu (@cpus)
|
||
|
|
{
|
||
|
|
print "$cpu";
|
||
|
|
foreach my $e (@encs)
|
||
|
|
{
|
||
|
|
# using user CPU time
|
||
|
|
my @start_time = times();
|
||
|
|
system($MPG123_CMD, '-q', '--cpu', $cpu, '-e', $e, '-t', @TEST_FILES );
|
||
|
|
my @end_time = times();
|
||
|
|
|
||
|
|
# third entry is child user time
|
||
|
|
printf(" %4.2f", $end_time[2] - $start_time[2]);
|
||
|
|
}
|
||
|
|
print("\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
|