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1	L1 cache reference 0.5 ns
2	Branch mispredict 5 ns
3	L2 cache reference 7 ns
4	Mutex lock/unlock 100 ns (25)
5	Main memory reference 100 ns
6	Compress 1K bytes with Zippy 10,000 ns (3,000)
7	Send 2K bytes over 1 Gbps network 20,000 ns
8	Read 1 MB sequentially from memory 250,000 ns
9	Round trip within same datacenter 500,000 ns
10	Disk seek 10,000,000 ns

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