COLcopy

I'm seeing a strange behaviour with COLcopy(). (Dec2016, optimized, non-devel compilation)

In short, it seems to take almost half second to copy a 1-tuple string (view) bat.

Inspected with gdb, I see that the copy falls in "(3) we can copy the heaps (memcopy, or even VM page sharing)", with the following values:

cnt = 1 bunstocopy = BUN_NONE isVIEW(b) = TRUE VIEWtparent(b) = 0 b->T.heap.size = 1024 b->T.vheap.size = 1094320128

The actual tail and heap copy then takes place:

heapcopy(bn, "tail", &bthp, &b->theap) heapcopy(bn, "theap", &thp, b->tvheap)

Does this mean that a heap of almost 1GB has been copied for a 1-tuple view?

Roberto