On 2014-05-29 11:03:11 +0000, Wanderer said:
It will be hard to beat Java's garbage collector. They use
generational, sequential memory approach, while D's memory manager
(correct me if I'm wrong) uses more common approach and has to deal
with possible memory fragmentation. Allocating a new object is
extremely cheap in Java, literally a few machine instructions, and
there is no locking because each thread has its own eden memory and
they never overlap.
Unless D introduces the possibility to move objects around in heap
(which is not possible with the support of pointers, I guess) and
eliminate the fragmentation, it will be hard to make GC as fast. Just
3% of difference look great enough to me. :-)
I was under the impression that the D gc does move objects around on
the heap and then update the pointers.
