From: Eric Wong Date: 2015-01-17T21:39:41+00:00 Subject: [ruby-core:67660] Re: [ruby-trunk - Bug #10686] Memory leaking from torture test of symbol GC Symbol GC is a new feature in 2.2. In 2.1, symbols could never be GC-ed at all so you'll see this growth, and I don't think it's the policy to backport new features.