I know how to do a simple sort on hash values:

@sorted = sort { $hashed{$a} <=> $hashed{$b} } keys %hashed;

but I need need to have the keys also sorted in case of
(and my application will have many) equal values.

For example,
$hashed{'a'} = 1;
$hashed{'b'} = 3;
$hashed{'c'} = 2;
$hashed{'d'} = 2;
$hashed{'e'} = 1;
$hashed{'f'} = 2;

I need to come up with (in a report):
a 1
e 1
c 2
d 2
f 2
b 3

I imagine a simple way to do this exists.
Thank you for your help.