Ever wonder exactly which keys in your particular hash are sharing a bucket? Here is a destructive tool that will tell you that:

my %hash= 0..299;
for my $av (  getKeyCollisions( \%hash )  ) {
    print "@$av\n";
}

sub getKeyCollisions
{
    my( $hv )= @_;
    no warnings 'numeric';
    my $buckets= 0 + %$hv;
    my @keys= keys %$hv;
    my( @clash, @return );
    while(  @keys  ) {
        my $key= shift @keys;
        delete $hv->{$key};
        my $b= 0 + %$hv;
        if(  $b == $buckets  ) {
            push @clash, $key;
        } elsif(  @clash  ) {
            push @return, [@clash,$key];
            @clash= ();
        }
        $buckets= $b;
    }
    return @return;
}
__END__
276 90
206 118
272 190
298 194
226 58
284 86 76
82 110
280 228
268 218 202 168
184 14
178 24
104 124
256 216
26 80
72 162
74 240 246
108 230
64 210
68 188
116 88 136
30 144
286 120 28
40 134 156
192 250
22 42 158
94 248
296 34
132 164
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