From: Yukihiro Matsumoto Date: 2012-01-06T00:49:12+09:00 Subject: [ruby-core:41920] Re: Proposal: Bitmap Marking GC Hi, In message "Re: [ruby-core:41919] Re: Proposal: Bitmap Marking GC" on Thu, 5 Jan 2012 23:53:38 +0900, Roger Pack writes: |Maybe you could/should make GC collector type user specifiable, to |avoid the slowdown [this is what REE does I think]. No, REE uses bitmap marking all the time. Besides that, extra complexity in GC is not a good idea, especially when we expect bitmap marking will be the basis for further optimization. matz.