On Monday, 13 January 2014 at 21:08:50 UTC, Dmitry Olshansky
wrote:
So what? It can't move it and as such there is nothing special
about it, it doesn't _cost_ anything to pin object.
Well, the advantage of compaction is that you (in theory) can
relocate objects so that you:
1. get temporal and spatial coherency (sitting on the same page,
to avoid paging)
2. get rid of fragmentation (less paging, requires smaller
address space)
3. can have a faster and simpler allocator
If you start using the GC heap for "malloc" with pinning, you
loose a lot of that? That's the cost.
