Dear Monks, I can't seem to figure out how to sort on the 'priority' part of my HoH. Here's a short example of what I have tried:

#!/usr/bin/perl -w

use strict;

my %tmp = (
  'hostX1-1-l.example.com' => {
    'priority' => {
      'IS-ABC' => '3',
    },
    'os' => {
      'linux' => 'linux',
    },
    'pager' => {
      'man-duty' => 'man-duty',
    },
  },
  'hostC1-3-l.example.com' => {
    'priority' => {
      'IS-XYZ' => '3',
    },
    'os' => {
      'linux' => 'linux',
    },
    'pager' => {
      'man-duty' => 'man-duty',
    },
  },
  'hostc1-3-l.example.com' => {
    'priority' => {
      'OS-XYZ' => '3',
    },
    'os' => {
      'linux' => 'linux',
    },
    'pager' => {
      'man-duty' => 'man-duty',
    },
  },
  'hostC1-9-l.example.com' => {
    'priority' => {
      'XS-XYZ' => '3',
    },
    'os' => {
      'linux' => 'linux',
    },
    'pager' => {
      'man-duty' => 'man-duty',
    },
  },
  'hostH1-2-l.example.com' => {
    'priority' => {
      'IS-XYZ' => '3',
    },
    'os' => {
      'linux' => 'linux',
    },
    'pager' => {
      'man-duty' => 'man-duty',
    },
  },
  'hostQ1-3-l.example.com' => {
    'priority' => {
      'IS-ABC' => '3',
    },
    'os' => {
      'linux' => 'linux',
    },
    'pager' => {
      'man-duty' => 'man-duty',
    },
  },
);

sub sortBySite {
        my $site_a = $tmp{$a}{'priority'};
        my $site_b = $tmp{$b}{'priority'};
        return $site_a <=> $site_b;
}

#foreach my $host ( sort { $tmp{$a}{'priority'} <=> $tmp{$b}{'priority
+'} } sort keys %tmp ) {
#foreach my $host ( sort keys %tmp ) {
foreach my $host ( sort sortBySite keys %tmp ) {
        for my $site ( keys %{ $tmp{$host}{'priority'}} ) {
                print "$host->$site is $tmp{$host}{'priority'}{$site}\
+n";
        }
}
[download]

The output I get is this:

hostX1-1-l.example.com->IS-ABC is 3
hostC1-3-l.example.com->IS-XYZ is 3
hostc1-3-l.example.com->OS-XYZ is 3
hostC1-9-l.example.com->XS-XYZ is 3
hostH1-2-l.example.com->IS-XYZ is 3
hostQ1-3-l.example.com->IS-ABC is 3
[download]

What I am try to get is this:

hostQ1-3-l.example.com->IS-ABC is 3
hostX1-1-l.example.com->IS-ABC is 3
hostC1-3-l.example.com->IS-XYZ is 3
hostH1-2-l.example.com->IS-XYZ is 3
hostc1-3-l.example.com->OS-XYZ is 3
hostC1-9-l.example.com->XS-XYZ is 3
[download]

Thanks