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@jboner
jboner / latency.txt
Last active July 24, 2024 10:11
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
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@tarleb
tarleb / latex-short-captions.lua
Last active June 14, 2019 22:43
Filter to turn figure titles into short captions in LaTeX
-- don't do anything unless we target latex
if FORMAT ~= "latex" then
return {}
end
local List = require'pandoc.List'
local function latex(str)
return List:new{pandoc.RawInline('latex', str)}
end