abstract ;;Quote: Dartmouth Time-Sharing using binary buddy system for disk allocation; fast and effective

abstract+;;Quote: binary buddy disk allocation has 2-6% internal fragmentation and 0-10% external fragmentation; most files contiguous

abstract+;;Quote: binary buddy disk allocation assigns up to 24 extents per file; reallocates as needed; average 1.5 extents

356 ;;Quote: an extent for binary buddy disk allocation is a triple of device number, first sector, and log(sectorCount); 36-bit code with 24 bits for sector

356+;;Quote: include a device number in a disk address (extent) for multiple devices per file; for balancing, full allocation, and huge files

366 ;;Quote: binary buddy disk allocation just needs a 250 slot free-space table in memory; access overflow lists every 1000 allocate and free operations

366+;;Quote: the number of free blocks in a buddy system is proportional to the square root of the allocated blocks

368 ;;Quote: binary buddy disk allocation used for 20 years; no problem if disks are nearly full; 50% bandwidth utilization; 1.5 extents per file; simple