For efficiency, the QNX allocator preallocates bands of memory (small buffers) for satisfying requests for small allocations. This saves you a trip through the kernel's memory manager for small blocks, thus improving your performance.
The bands handle allocations of up to 16, 24, 32, 48, 64, 80, 96, and 128 bytes in size, any activity in these bands is shown on the Bands tab:
