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Jeff Dean's Numbers Every Programmer Should Know

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HintNumber (ns)
L1 cache reference
Branch mispredict
L2 cache reference
Mutex lock/unlock
Main memory reference
Compress 1K bytes (with Snappy/Zippy)
Send 2K bytes over 1Gbps network
HintNumber (ns)
Read 4K randomly from SSD
Read 1 MB sequentially from memory
Round trip within same datacenter
Read 1 MB sequentially from SSD
Disk seek
Read 1 MB sequentially from disk
Send packet CA->Netherlands->CA

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Created May 1, 2016SourceReportFavoriteNominate
Tags:dean, jeff

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