computer engineering my work,automotive my passion, photography my hobby.
l1 cache reference 0.5 ns branch mispredict 5 ns l2 cache reference 7 ns main memory reference 100 ns send 2k bytes over 1 gbps network 20,000 ns read 1 mb sequentially from memory 250,000 ns round trip within same datacenter 500,000 ns disk seek 10,000,000 ns read 1 mb sequentially from disk 30,000,000 ns
and what, socrates, is the food of the soul? surely, i said, knowledge is the food of the soul.
[plato]