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#!/usr/bin/perl
use Tie::Cache;
use Tie::Cache::LRU;
use Benchmark;
use strict;
my $cache_size = 5000;
my $write_count = $cache_size * 2;
my $read_count = $write_count * 4;
my $delete_count = $write_count;
tie my %cache, 'Tie::Cache', $cache_size;
tie my %cache_lru, 'Tie::Cache::LRU', $cache_size;
my @cols;
push(@cols, \%cache, \%cache_lru);
printf " %15s", "Cache Size $cache_size";
for(@cols) {
my $module = ref(tied(%$_));
printf " %16s %3.2f", $module, eval "\$$module"."::VERSION";
}
print "\n";
&report("$write_count Writes", sub {
my $cache = shift;
for(1..$write_count) {
$cache->{$_} = $_;
}
},
@cols,
);
&report("$read_count Reads", sub {
my $cache = shift;
for(1..$read_count) {
my $value = $cache->{$_};
}
},
@cols,
);
&report("$delete_count Deletes", sub {
my $cache = shift;
for(1..$delete_count) {
my $value = $cache->{$_};
}
},
@cols,
);
sub report {
my($desc, $sub, @caches) = @_;
printf(" %-15s", $desc);
for my $cache (@caches) {
my $timed = timestr(timeit(1, sub { &$sub($cache) }));
$timed =~ /([\d\.]+\s+cpu)/i;
printf("%18s sec", $1);
}
print "\n";
}
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