Swapping is mostly random access operations, writing small blocks here and there, HDD can do about 100 seeks/sec, and it gives speed less that 1 Mb/s while sequ

Swapping is mostly random access operations, writing small blocks here and there, HDD can do about 100 seeks/sec, and it gives speed less that 1 Mb/s while sequential read/write gives speeds of order of tens Mb/s.