𝗟𝗮𝘁𝗲𝗻𝗰𝘆 𝗡𝘂𝗺𝗯𝗲𝗿𝘀 𝗘𝘃𝗲𝗿𝘆 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗲𝗿 𝗦𝗵𝗼𝘂𝗹𝗱 𝗞𝗻𝗼𝘄 Check the main latency numbers: 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 Send 2K bytes over 1 Gbps network ....... 20,000 ns = 20 µs SSD random read ........................ 150,000 ns = 150 µs Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs Round trip within same datacenter ...... 500,000 ns = 0.5 ms Read 1 MB sequentially from SSD* ..... 1,000,000 ns =  1 ms Disk seek ........................... 10,000,000 ns = 10 ms Read 1 MB sequentially from disk .... 20,000,000 ns = 20 ms Send packet CA->Netherlands->CA .... 150,000,000 ns = 150 ms Based on the work of Jonas Bonér (full source in the comments). ______ If you like my posts, please follow me, @milan_milanovic, and hit the 🔔 on my profile to get a notification for all my new posts. Grow with me 🚀! #technology #softwareengineering #programming #techworldwithmilan #coding