L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns
Compress 1K bytes with Zippy ............. 3,000 ns = 3 µs
Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs
Marco Rietveld mrietveld
mrietveld
/ latency.markdown
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February 7, 2019 15:54
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Latency numbers every programmer should know