mono/mono — pull request #1284 by schani (2014-09-14 09:34:06+00:00)
Title: Remove fixed heap and the parallel collector in SGen.

The parallel collector is basically untested and its performance is erratic. Getting it to work is not a priority at the moment, and it's a maintenance burden.

The performance improvements we have in the pipeline will overtake fixed heap's performance, and since nobody's using it we won't implement them for fixed heap, so there's no reason for it to be here anymore.