Skip to content

Instantly share code, notes, and snippets.

@WeRockStar

WeRockStar/latency.txt

Forked from jboner/latency.txt
Created June 10, 2019 02:45
Show Gist options
  • Save WeRockStar/cf64eaef6e9dbc829b0abb0ef408864b to your computer and use it in GitHub Desktop.
Save WeRockStar/cf64eaef6e9dbc829b0abb0ef408864b to your computer and use it in GitHub Desktop.
Download ZIP
Latency Numbers Every Programmer Should Know
Raw
latency.txt
By Jeff Dean:
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
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 20,000,000 ns
Send packet CA->Netherlands->CA 150,000,000 ns
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment