Size != Length.

$ perl -MDevel::Size=total_size -wE'my%h=(test1=>[1..3],test2=>[4..6])
+;say"$_ -> ",total_size$h{$_}for keys%h'
test1 -> 160
test2 -> 160
$ perl -wE'my%h=(test1=>[1..3],test2=>[4..6]);say"$_ -> ",scalar@{$h{$
+_}}for keys%h'
test2 -> 3
test1 -> 3
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