Interesting article from JVM world - Conservative GC: Is It Really That Bad?

[Nikolay]

These guys have independent JVM implementation and used 
Conservative GC for many years. As I can see it it is very 
similar to d-runtime GC. But their conclusion is: "sooner or 
later the absence of knowledge about the liveness of local 
variables will lead to problems in production that just cannot be 
handled"

BTW Have we any progress or scheduled for GC improvements (e.g. 
process fork for parallel GC, thread-local GC)?