Ruby 2.1 has a very important property: GC scales linearly with the amount of memory allocated. Before 2.1 GC performance increased polynomially. So, for examp

Ruby 2.1 has a very important property: GC scales linearly with the amount of memory allocated. Before 2.1 GC performance increased polynomially. So, for example, processing 10k rows from the table could take 10 seconds, and 100k would never finish. With 2.1 everything I do actually finishes :)