Quoting matiphas@...8...:
I've face d the same issue for the French translation. So I took a look on google : memory is allocated by blocks of a defined size, which don't always match the size of the objects allocated. So there is a delta (n blocks -> n * size of a block <> size of object) and this delta is the slack memory.
Close. In this case I'm thinking in terms of the heap overall rather than individual blocks.
Part of the heap is being actively used by allocated objects (and this may include "slack" memory by the above definition), and the remainder is still reserved from the system, but isn't being actively used.
I think more typical usage is to call this memory "free" rather than "slack". If someone wants to rename the columns I won't care much...
-mental